This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

FREE SHIPPING & EXCHANGES IN THE CONTIGUOUS US

FREE SHIPPING & EXCHANGES IN THE CONTIGUOUS US

FREE SHIPPING & EXCHANGES IN THE CONTIGUOUS US

FREE SHIPPING & EXCHANGES IN THE CONTIGUOUS US

FREE SHIPPING & EXCHANGES IN THE CONTIGUOUS US

Cart 0

No more products available for purchase

Products
Add order notes
Congratulations! Your order qualifies for free shipping You are $300 away from free shipping.
Subtotal Free
View cart
Shipping, taxes, and discount codes are calculated at checkout

Diesel Boot Dune Chromexcel

$435.00
Size6
WidthD

Free Exchange on Domestic Orders

Buy now with ShopPay

The word “diesel” doesn’t exactly remind us of something flashy but instead of something built for strength and longevity. This is our rendition of the basic plain toe boot pattern—made with nothing but proven leather uppers, lining, and insole.

Chromexcel leather tanned by Horween in Chicago is incredibly resilient while offering unparalleled character. The hot-stuffed tannage's natural oils and waxes create an unmistakable pull-up effect and supple feel. 

Creasing and color variation are to be expected on these natural, aniline leathers. Each pair will develop differently as each hide is unique.

This boot comes equipped with our new Micro Stud Rubber Sole, which is built to handle all seasons. The rubber compound features a medium density and combines traction and durability.

  • Goodyear-welt construction
  • Leo last
  • Chromexcel from Horween
  • Full-grain kip leather lining
  • 360º split-reverse welt
  • Antique brass eyelets and speed hooks
  • Vegetable-tanned leather insole, welt, and midsole
  • Cork filler with steel shank 
  • Full-grain leather heel counters
  • Micro stud rubber outsole

Every pair crafted on Xiamen Island, China

The Leo last runs a half-size large. Our customers typically take our Leo-lasted footwear a half-size down from their average sneakers size or the same size as their other Goodyear-welted footwear. 

Not sure? Send an email to info@grantstoneboot.com referencing your current sizing for help.

Enjoy fast, free shipping on orders over $300 in the contiguous US. Orders are processed and shipped within 1-3 business days.

Contiguous U.S. Returns:

  • Free exchanges
  • Refunds - A $15 restocking fee per pair is held when using the prepaid label

For more information, please visit our Help Desk.

[{"variant_id":"15397513396310" , "metafield_value":""},{"variant_id":"15397513494614" , "metafield_value":""},{"variant_id":"28272800563286" , "metafield_value":""},{"variant_id":"12117302116416" , "metafield_value":""},{"variant_id":"12117302149184" , "metafield_value":""},{"variant_id":"28272800727126" , "metafield_value":""},{"variant_id":"12117302181952" , "metafield_value":""},{"variant_id":"12117302214720" , "metafield_value":""},{"variant_id":"28272802758742" , "metafield_value":""},{"variant_id":"12117302247488" , "metafield_value":""},{"variant_id":"12117302280256" , "metafield_value":""},{"variant_id":"28272801284182" , "metafield_value":""},{"variant_id":"12117302313024" , "metafield_value":""},{"variant_id":"12117302345792" , "metafield_value":""},{"variant_id":"28272802922582" , "metafield_value":""},{"variant_id":"12117302378560" , "metafield_value":""},{"variant_id":"12117302411328" , "metafield_value":""},{"variant_id":"28272802955350" , "metafield_value":""},{"variant_id":"12117302444096" , "metafield_value":""},{"variant_id":"12117302476864" , "metafield_value":""},{"variant_id":"28272803446870" , "metafield_value":""},{"variant_id":"12117302509632" , "metafield_value":""},{"variant_id":"12117302542400" , "metafield_value":""},{"variant_id":"28272845193302" , "metafield_value":""},{"variant_id":"12117302575168" , "metafield_value":""},{"variant_id":"12117302607936" , "metafield_value":""},{"variant_id":"28272845783126" , "metafield_value":""},{"variant_id":"12117302640704" , "metafield_value":""},{"variant_id":"12117302673472" , "metafield_value":""},{"variant_id":"28272846143574" , "metafield_value":""},{"variant_id":"12117302706240" , "metafield_value":""},{"variant_id":"12117302739008" , "metafield_value":""},{"variant_id":"28272846504022" , "metafield_value":""},{"variant_id":"12117302771776" , "metafield_value":""},{"variant_id":"12117302804544" , "metafield_value":""},{"variant_id":"28272847323222" , "metafield_value":""},{"variant_id":"12117302837312" , "metafield_value":""},{"variant_id":"12117302870080" , "metafield_value":""},{"variant_id":"28272848306262" , "metafield_value":""},{"variant_id":"12117302902848" , "metafield_value":""},{"variant_id":"12117302935616" , "metafield_value":""},{"variant_id":"28272851615830" , "metafield_value":""}]

Diesel Boot Dune Chromexcel

$435.00
B
bootholic_
02/17/24
A closer look at the patina on my grantstone Diesel boots in horweenleather dune chromexcel. I bought them in 2021 December. Due to my job, I can’t wear them as frequently as I would like to. I probably wear them 1-2 times in a fortnight. However, they’ve been through my 2 week trip to Greece 🇬🇷 , 1 week trip to Bangkok 🇹🇭, and 16 day trip to UK 🇬🇧, and most recently my 3 week trip back to Taiwan 🇹🇼. They are my no.1 boots for traveling as they are versatile and comfy. Most importantly, they can easily be dressed up and down to be more space efficient. #bootholic #grantstone #horween #chromexcel #goodyearwelted #patina #leatherboots #ruggedworkwear #経年変化 #travelgear
READ MORE...
READ LESS
B
bootholic_
02/17/24
A closer look at the patina on my grantstone Diesel boots in horweenleather dune chromexcel. I bought them in 2021 December. Due to my job, I can’t wear them as frequently as I would like to. I probably wear them 1-2 times in a fortnight. However, they’ve been through my 2 week trip to Greece 🇬🇷 , 1 week trip to Bangkok 🇹🇭, and 16 day trip to UK 🇬🇧, and most recently my 3 week trip back to Taiwan 🇹🇼. They are my no.1 boots for traveling as they are versatile and comfy. Most importantly, they can easily be dressed up and down to be more space efficient. #bootholic #grantstone #horween #chromexcel #goodyearwelted #patina #leatherboots #ruggedworkwear #経年変化 #travelgear
READ MORE...
READ LESS
G
germanshoeguy
10/16/23
patinatimes commented on my last post that they have aged so well and he's definitely right. The grantstone Diesel in Dune natural CXL is still one of the best in my opinion, not only for the price, but in general. QC and craftsmanship are just top notch and I really enjoy wearing them every time. #grantstone #horween #bootsoftheday #bootcollection #denim #nakedandfamousdenim #selvedge #boots #handmade #chromexcel #gyw #goodyearwelted
READ MORE...
READ LESS
B
bootspyofficial
10/02/23
Stoked to be doing the stitchdownpatinathunderdome - I’m looking forward to documenting how these grantstone Diesels in Natural Horween Chromexcel age over the next six months. Despite reviewing tons of boots, I’m gonna give these guys as much wear as I can. #patina #stitchdown #stitchdownpatinathunderdome #patinathunderdome #horween #chromexcel #grantstone
READ MORE...
READ LESS
B
briansbootpage
08/31/23
I love my Grant Stone Diesels with Dune leather. These boots are amazing even though they are beat up. I've never had a leather boot that stains when water hits it and all these interesting scuffs and marks etc. I really need to get another Grant Stone! grantstone
READ MORE...
READ LESS
G
germanshoeguy
06/25/23
Beautiful grantstone Diesel Boots in Dune Chromexcel combined with a recycled selvedge denim by nakedandfamousdenim
READ MORE...
READ LESS
B
bootscph
06/06/23
Boots boots! Hopefully receiving a new pair today! #grantstonedieselboots #eternaroyalkontiki #bootcollector
READ MORE...
READ LESS
B
bootscph
06/06/23
Boots boots! Hopefully receiving a new pair today! #grantstonedieselboots #eternaroyalkontiki #bootcollector
READ MORE...
READ LESS
B
bootscph
05/21/23
Weekend almost done! Getting ready to head back to town! Wearing grantstone Dune Diesel Boot, a goretex west and the omega Globemaster.. Have a blessed Sunday:-) #grantstonedieselboots #grantstoneshoes #serviceboots #bootcollector #chromeexcel #goodyearwelt #goodyearwelted #goretex #omega #globemaster #omegaglobemaster
READ MORE...
READ LESS
B
bootscph
05/19/23
Ready for a walk in the woods, with my Diesel Dune boots from grantstone, my longhurst waxed jacket from barbour (in need of some new wax and a couple of stitches :-)) and a vintage Omega Geneve on Wrist! #bootcollector #goodyearwelt #waxedjacket #longhurst #barbourwaxforlife #barbour #barbourlonghurst #grantstonedieselboots #grantstoneshoes #omegageneve #vintagewatch
READ MORE...
READ LESS
B
bootholic_
02/28/23
Bluish tone on a rainy day. I love how versatile this pair of the_rite_stuff Daybreak salt & pepper work pants is. They are extremely comfortable and easy to pair with my grantstone diesel boots. 💈 sixersjb oilcangrooming sgbpomade 👕 uniqlo 👖 the_rite_stuff - Daybreak Salt & Pepper Navy 👞 grantstone - Diesel boots (Dune CXL) Belt sfk_kurt_faith.co #bootholic #grantstoneboots #theritestuff #sfkleather #uniqlo #classicbarber #workwear #leatherboots #leatherbelt
READ MORE...
READ LESS
B
bootholic_
02/28/23
Bluish tone on a rainy day. I love how versatile this pair of the_rite_stuff Daybreak salt & pepper work pants is. They are extremely comfortable and easy to pair with my grantstone diesel boots. 💈 sixersjb oilcangrooming sgbpomade 👕 uniqlo 👖 the_rite_stuff - Daybreak Salt & Pepper Navy 👞 grantstone - Diesel boots (Dune CXL) Belt sfk_kurt_faith.co #bootholic #grantstoneboots #theritestuff #sfkleather #uniqlo #classicbarber #workwear #leatherboots #leatherbelt
READ MORE...
READ LESS
B
bootholic_
11/18/22
I was feeling earth tones that day. And thanked to the perfect sun light in Pyrgos and the white buildings for making the look pop! 💈: joysbirththebarbershop oilcangrooming sgbpomade 👕: bronsonmfg 🩳: bronsonmfg 🧦: uniqlo 👞: grantstone #bootholic #joysbirththebarbershop #oilcangrooming #rayban #bronsonmfg #sfkleather #faithoriginal #uniqlo #grantstoneboots #henleytshirt #gurkhashorts #vintagefashion #qualitymade #classicbarber
READ MORE...
READ LESS
R
realigndenim
10/31/22
Denim and boots are often referred to as being a match made in heaven. Both take time to break-in, are made to last and will look better with time.⁠ 📸 hansjellema
READ MORE...
READ LESS
D
dufan.chen
06/18/22
Grant Stone Diesel Boot My very first pair, also one of my favorite grantstone #usbootsfreak #usbootfreak #grantstone #grantstoneboots
READ MORE...
READ LESS
M
michael_zane_dos
05/29/22
Sunday boot-day. grantstone
READ MORE...
READ LESS
R
robindenim
05/03/22
Lacing up for new adventures! 📸 hansjellema
READ MORE...
READ LESS
S
stitchdownpatinathunderdome
04/11/22
pogo_lab’s grantstone Diesel boots in Badlassi saddle tan veg, six months Domed. Huzzah. ⁣ ⁣ #grantstone #grantstoneboots #grantstonediesel #badlassisaddletan #vegtanleather #vegtanboots #patina #bootpatina #patinathunderdome #goodyearwelt
READ MORE...
READ LESS
S
stitchdown
10/13/21
I want to introduce you to Rupert. Rupert took all these wonderful boot pictures.* Rupert works at standardandstrange…the one in NEW YORK CITY. ⁣ ⁣ Which is a thing, as of extremely soon. And is about the most exciting thing I could think of, not only because I live 45 minutes away from it. ⁣ ⁣ As shoe/boot cities go, New York is among the best. But despite that, there’s so much that’s missing right now, especially in terms of wescoboots, Japanese brands like johnlofgrenbootmaker and brasstokyo and um… Indonesian makers? (I swear all I know is there’s a secret one that’ll be stocked.) ⁣ ⁣ And I have to say I’m pretty jazzed that S&S is here to take care of that. ⁣ ⁣ ⁣ ⁣ ⁣ *𝘙𝘶𝘱𝘦𝘳𝘵 𝘪𝘴 𝘢 𝘧𝘢𝘯𝘤𝘺 𝘭𝘪𝘨𝘩𝘵 𝘸𝘩𝘰 𝘩𝘦𝘭𝘱𝘦𝘥 𝘵𝘢𝘬𝘦 𝘱𝘪𝘤𝘵𝘶𝘳𝘦𝘴 𝘰𝘧 𝘦𝘷𝘦𝘳𝘺𝘰𝘯𝘦’𝘴 @𝘴𝘵𝘪𝘵𝘤𝘩𝘥𝘰𝘸𝘯𝘱𝘢𝘵𝘪𝘯𝘢𝘵𝘩𝘶𝘯𝘥𝘦𝘳𝘥𝘰𝘮𝘦 𝘣𝘰𝘰𝘵𝘴 𝘢𝘵 𝘵𝘩𝘦 𝘪𝘯𝘢𝘶𝘨𝘶𝘳𝘢𝘭 𝘚𝘋𝘗𝘢𝘭𝘰𝘰𝘻𝘢⁣ ⁣ #standardandstrange #onderhoud #flamepanda #grantstone #arnoshoes #whitesboots #ostmo #ironboots #bootmaker #patina
READ MORE...
READ LESS
L
literarythreads
08/11/21
Hey, I’m Hunter and welcome to my new insta! I’m going to try to post daily outfit inspo from my day-to-day. Thanks for the follow and happy #nationalbookloversday! 👕 taylorstitch 👖 flintandtinder 👞 grantstone #mensfashion #fits #mylook #boots #ootd #whatiworetoday
READ MORE...
READ LESS
V
vic_tsao
05/14/21
Friday🤓 🥾 grantstone Diesel Boot #grantstone #grantstoneboots #usbootsfreak #usbootfreak
READ MORE...
READ LESS
W
weltventurer
04/28/21
Been wearing my original Grant Stone Diesel Boots in 11D for a few weeks now. They haven't really stretched to my foot like I'd hoped, so I ordered the same boot in 11E. (Natural Chromexcel is awesome looking.) Going to wear these beauties now and see if I can figure out what size I need for sure in the Leo last. Grant Stone boots are too good to not find out my size. 😁 #grantstone #grantstoneboots #leatherlaces #leatherboots #chromexcel #horweenleather #mensboots #heritageboots #goodyearwelted #proudlymadeinchina #madeinxiamen
READ MORE...
READ LESS
B
bootlife_az
02/13/21
Busted out the grantstone diesel boots in dune last night. Tacos and cocktails in a patio in Phoenix last night
READ MORE...
READ LESS
N
newenglandindigo
02/04/21
New boots, old denim. #grantstone #boots #denim #cxl #naturalcxl #heritage #bootseason #stitchdown #3sixteen #goodyearwelt #horweenchromexcel #ruggedstyle
READ MORE...
READ LESS
2
2young4gyw
03/20/20
An actual quality post? From me? Im amazed too. This is my 100th post special, with the format, layout, and the somewhat reflective caption I’m about to write, all inspired by upstateguystyle . Anyway, finding ways to spend time all by yourself turns out harder than i thought, i could not meet up with my few friends that i had, and thrift stores are a no-go either. So a few days ago, I decided to just go into a jungle by myself. It’s actually a park/forest but damn it’s quite big. Lots of time to enjoy the tranquility, do some self-reflection, and i took some photos too. And also, grant stone aren’t exactlythe most rugged boots, they certainly can take a beating on the trail. . . #ootd #wiwt #ruggedstyle #ruggedcasualstyle #rugged #heritagestyle #heritagewear #vintageinspired #leatherjacket #nakedandfamousdenim #nakedandfamous #elephantdenim #grantstone #grantstonearmy #bootstyle #denimstyle #denimhead #denimheads #boothead #outfitinspiration #earthstone #selvedgesunday #selvedge #selvedgedenim #selvedgeforum #fadefriday #denimlovers #denimordeath
READ MORE...
READ LESS
2
2young4gyw
03/20/20
Last appreciation post. - For my friends who are unfamiliar with the term, “last” here is a noun. A shoe last is the wooden or plastic form/frame/mold that the leather will be stretched upon to take the 3D shape of that last. Unquestionably, the last is the soul of a shoe as it ultimately determines the final appearance of the shoe itself. What I want to talk about here is how beautiful the last from Grant Stone is. In my opinion, surpasses all other shoes last in its price range in terms of beauty and elegance and whatever noun you would use to describe it (heavy emphasis on “in its price range”). A lot of shoes and boots out there in the sub-300$ to more-than-400$ range seriously looks like a kid drew up a boot from imagination. They look, if not bulbous, then just generic, or round, or have that toe-spring which i despise. The grant stone boots however, both the curves of the last and the pattern of the leather are well refined and genuinely make for an aesthetically pleasing piece of footwear. An example would be the toe puff in the 3rd photo, may the pictures speak for themselves. And again, in my opinion, this last is on par with that of the Alden’s Barie and Viberg’s 2030. So, limited as my budget maybe, I’m happy with the decision not to compromise my own preferences for prices, and Grant Stone is truly one of my best purchases yet. That’s enough for now. Please don’t get offended cause I share my opinion on the internet. Thank you . . #grantstone #grantstoneboots #grantstonearmy #grantstonediesel #dieselboots #serviceboots #boot #boots #naturalchromexcel #naturalcxl #chromexcel #chromexcelleather #horweenleather #horweenchromexcel #shoegazing #bootgazing #shoegaze #boothead #goodyearwelt #goodyearwelted #stormwelt #madetobeworn #usbootsfreak #usbootfreak #leatherpatina #leatheraging #shoelast #highqualityboots
READ MORE...
READ LESS
T
tooyoungforgyw
02/07/20
I was trying to capture some water beads on the leather and put my iphone 6 camera right in front of the boot. This is what i ended up with. Certainly not my style of photography nor aesthetic but I got the water beads anyway. . . #grantstone #naturalchromexcel #naturalcxl #goodyearwelt #goodyearwelted #serviceboot #serviceboots #dieselboots #bootporn #bootpornery #shoegazing #shoegaze #patina #leatherpatina #followthepatina #horweenleather #horween #chromexcel #madetobeworn #shoeoftheday #bootoftheday #picoftheday #selvedge #selvedgesunday #selvedgedenim #boothead #bootheads #denimhead #denimheads #productphotography
READ MORE...
READ LESS
T
tooyoungforgyw
01/21/20
The wait is no more. The boots are here. Grant Stone Natural Chromexcel!!! I could not express how beautiful they are as I hold them in my mortal hands. Spectacular!!! . . grantstone #grantstone #naturalchromexcel #naturalcxl #goodyearwelt #goodyearwelted #serviceboot #serviceboots #dieselboots #bootporn #bootpornery #shoegazing #shoegaze #patina #leatherpatina #followthepatina #horweenleather #horween #chromexcel #madetobeworn
READ MORE...
READ LESS
T
tooyoungforgyw
01/21/20
The wait is no more. The boots are here. Grant Stone Natural Chromexcel!!! I could not express how beautiful they are as I hold them in my mortal hands. Spectacular!!! . . grantstone #grantstone #naturalchromexcel #naturalcxl #goodyearwelt #goodyearwelted #serviceboot #serviceboots #dieselboots #bootporn #bootpornery #shoegazing #shoegaze #patina #leatherpatina #followthepatina #horweenleather #horween #chromexcel #madetobeworn
READ MORE...
READ LESS
E
everyday_is_boot_season
11/26/19
grantstone Diesel boots in "Dune" (Natural) CXL chupsocks War Bonnet sock in Fog Grey #grantstone #grantstoneboots #grantstonearmy #chupsocks
READ MORE...
READ LESS
R
robindenim
11/03/19
🍁 Autumn + Winter pickups Jeans tenue.co Boots grantstone 📸 hansjellema • • • • #robindenim #rawdenim #selvedge #selvedgedenim #japanesedenim #denim #jeans #denimhead #denimporn #rugged #ootd #outfitoftheday #fashion #wiw #mystyle #simplefits #ootdmen #styleformen #menswear #denimstyle #menfashionpost #sustainablefashion #backtominimal #fashionblogger #madewell #menwithstreetstyle #japanesedenim #madeinjapan #denimfades #menboots
READ MORE...
READ LESS
R
robindenim
09/30/19
Denim x Leather tenue.co x grantstone 📸 hansjellema • • • • #robindenim #rawdenim #selvedge #selvedgedenim #japanesedenim #denim #jeans #denimhead #denimporn #rugged #ootd #outfitoftheday #fashion #wiw #mystyle #simplefits #ootdmen #styleformen #menswear #denimstyle #menfashionpost #sustainablefashion #backtominimal #fashionblogger #madewell #menwithstreetstyle #japanesedenim #madeinjapan #denimfades #drydenim
READ MORE...
READ LESS
G
grantstone
09/19/19
#repost • @robindenim @grantstone Diesel Boot Dune Chromexcel 📸 @hansjellema • • • • #robindenim #rawdenim #selvedge #selvedgedenim #japanesedenim #denim #jeans #denimhead #denimporn #rugged #ootd #outfitoftheday #fashion #wiw #mystyle #simplefits #ootdmen #styleformen #menswear #denimstyle #menfashionpost #sustainablefashion #backtominimal #fashionblogger #madewell #menwithstreetstyle #japanesedenim #madeinjapan #denimfades #drydenim
READ MORE...
READ LESS
P
Pedro V.
Verified Buyer
5.0 star rating
01/13/19
Excellent product
Review by Pedro V. on 13 Jan 2019 review stating Excellent product
At first I wasn't sure about these, it was a pretty different style from what I am used to but got a very good discount so decided to give them a try since there is a lot of info there comparing these with Alden quality.

It was also my first boot in a non suede-like kind of material since I don't like shiny shoes, but Chromexcel really is something else.

I am beginning to like them more and more as I keep wearing them and the comfort factor while good at the beginning keeps improving too and I am getting more used to their look.

Now I am thinking of getting the Ottawa boot in a different color, just wish there were more boot style variety (which might be better for me since I don't really need more boots).
A
Aaron G.
Verified Buyer
5.0 star rating
11/27/18
Diesel Boot - Dune
Review by Aaron G. on 27 Nov 2018 review stating Diesel Boot - Dune
tl;dr Excellent boots, very happy with the purchase.

The boots run a little large, so 1/2 - 1 size down from Brannock does the trick. I spoke with Wyatt for the size suggestion, who was very helpful, and ended up going a full size down from Brannock, and it fits well. Great design, and the sleek look is what I've been looking for. Quality is top-notch, only thing left is to see how the boots age over time. Based on the construction and everything I've seen so far, I'm expecting these to last a long time and look great in between.
G
grantstone
10/30/18
#repost of @getgoinginc dune diesel after a shine 👞
READ MORE...
READ LESS
G
grantstone
08/28/18
Rainy days call for the rubber sole 🌧️🌂
READ MORE...
READ LESS
A
aerosurferlv
10/12/17
Sported these beauties today with some black denims to make them pop @grantstone looks like @inn8chiro and I were on the same boot frequency this morning 😎👍✌️ #grantstone #grantstoneboots #aldenarmy #naturalchromexcel #nattycxl #goodyearwelted #bootporn #bootcollection #rawhidelaces #goraworgohome #blackdenim #styleblogger #styleinspiration #mensstyle #mensfashion #menwithclass #menwithstyle
READ MORE...
READ LESS

Made with

Goodyear-welt Construction

Renowned for its durability and ability to be resoled repeatedly, Goodyear-welt construction involves stitching a welt—a strip of leather or rubber—around the shoe's perimeter, creating a cavity. After filling the cavity with the shank and cork, the sole is attached, providing strength and water resistance. This construction method results in shoes that are not only long-lasting but also easily repairable, making them a timeless investment in quality craftsmanship.

Our Leo Last

Derived from our experience fitting and developing various orthopedic-shaped lasts designed for specific foot shapes, the Leo features a moderate arch, heel control, medial support, and forefront freedom. It embodies a traditional welted shoe shape while prioritizing all-day support and comfort. 

Our mission

Providing Excellent Service

Our priority has been putting customers in shoes that properly fit them and standing by our amazing products. Many customers have found they have been wearing an incorrect size for years. This has been lost in the market today. We offer the majority of our footwear in D, E, and EEE widths to provide well-fitting footwear.

We encourage customers to ask our team for assistance to ensure the best fit.