WIDE TOE BOX / ZERO DROP / 9 MM
Fission.01 / Barefoot Canvas Sneakers
Fission.01 / Barefoot Canvas Sneakers
An everyday canvas sneaker with room at the toes and a level sole.
Runs small. Most buyers order ½ size up. Size guide
What buyers say about fit
- “Runs about half size too small. Other than that they are perfect.” Juan C., verified buyer
- “Wide toe box girlie for life now! Super comfortable.” Michelle F., verified buyer
- “Be sure to order at least a half size up.” AJ, verified buyer
- “After first try in a size too snug, AC sent me the next size up.” Evan K., verified buyer
Order ½ size up from your usual sneaker size. Unworn pairs can be returned within 30 days with a prepaid label.
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Free shipping on US orders. 30 day returns for unworn items
Size and fit
Runs small. Order ½ size up.
Use your usual US sneaker size as the starting point. A wide toe box does not guarantee a fit for every foot.
| US men | US women | EU | UK |
|---|---|---|---|
| 5 | 6.5 | 37.5 | 4.5 |
| 5.5 | 7 | 38 | 5 |
| 6 | 7.5 | 38.5 | 5.5 |
| 6.5 | 8 | 39 | 6 |
| 7 | 8.5 | 39.5 | 6.5 |
| 7.5 | 9 | 40 | 7 |
| 8 | 9.5 | 40.5 | 7.5 |
| 8.5 | 10 | 41 | 8 |
| 9 | 10.5 | 41.5 | 8.5 |
| 9.5 | 11 | 42 | 9 |
| 10 | 11.5 | 42.5 | 9.5 |
| 10.5 | 12 | 43 | 10 |
| 11 | 12.5 | 43.5 | 10.5 |
| 11.5 | 13 | 44 | 11 |
| 12 | 13.5 | 44.5 | 11.5 |
| 13 | 14.5 | 45.5 | 12.5 |
Conversions describe the size labels, not foot length. Check the fit indoors before wearing outside.
Toe room and overall shoe width
Still unsure about size? Ask us about fit.
Materials and construction
- Organic cotton canvas upper
- Leather lined mesh
- Recycled rubber outsole
- RPET mesh insock and insole lining
Included with fission.01
A complimentary five day Foot Fundamentals course from The Foot Collective.
New to this kind of shoe?
A different shape and sole can take getting used to. Start with a short, familiar walk and pay attention to how it feels.
Great shoes
I have been wearing barefoot shoes for over ten years. I bought Xeros, Vivos, Lems, Tadevos, Hobibears, Magical Shoes, Saguaros, Merrells and others.
These feel the closest to being barefoot and together with my Magical Shoes look the most like regular shoes.
If there something I would like them to have is dark color uppers on white or natural soles. Fortunately, you can use fabric dye to get a different color upper since it’s made with a natural fiber. I dyed mine yellow at first and orange after wearing them a while. Perfect results. I would however like the option of colors on natural soles.
They do run a bit small and a 1/2 size bigger. would’ve been a much better fit. I still give them the top mark for looks and comfort.
I bought a pair of white fission.01 just before a trip abroad. After wearing them for 18 straight hours of travel, my feet felt as good as they did when I left the house. Usually my toes would be killing me from being jammed in a normal pair of shoes. When I got back from my trip, I immediately ordered a second pair in black. I had several people ask me where I got them while on my trip as well, which speaks to their cool look.
I’m very pleased with this product. I got two pair, black and cream, and they are both stellar performers. I’m a trainer at a gym and these have been my go-to shoes ever since I got them. They are comfortable and fashionable. I’ve dressed them up on evenings out with nice jeans or chinos, and they just work. They are also easy to clean. Sometime the canvas collects lint, but it’s easy to get off with a simple swipe using a lint brush. I’ve also worn these with toe spacers for 20 to 90 minute time frames with no problem.
Overall, these are great shoes. I would highly recommend them!
Thanks so much for the amazing review Sanu! We are so glad you are loving the product, and we hope to continue delivering more amazing shoes as we continue to grow. thanks so much for the support!
Excellent shoe
Comfortable
Versatile
Fast shipping
Excellent customer service
This is an awesome shoes. It is very light and fashionable shoes. I would definitely recommend it.
From order to payment and delivery- the easy button was hit. The packaging reminded me of the benefits of wearing a barefoot shoe. Took my Fission.01’s for a test spin and they were everything Abstract Chimp promised. Will wear these as daily footwear and especially during HIIT/CST workout programs. Great Shoe!
I really wanted to like these shoes, but the shape of the last just didn't fit me well. The area around the big toe is more pointed and it slopes down for the rest of the toes. It felt similar to Vivobarefoot shoes that I've had in the past. Going up half a size helped a bit to give my smaller toes some room, but then it felt like there was too much overhang in front of my big toe.
I also wasn't a huge fan of the design. I didn't like the ridges around the toe and heel and would prefer a smoothed out version. Also the pull tab on the heel would often catch on my pants and drive me crazy.
Some things I did like were the materials used on these. The outsole material was like magic. Amazing flexibility and ground feel while still feeling cushioned and protective. Also the canvas upper felt very durable.
I'd recommend these to anyone who likes the unique design and who enjoys the fit of Vivobarefoot shoes.
My AC’s are super comfortable for long walks, traveling and working. I like the minimalist design and look and feel and goes great with my style.
Stoked with my brand new pair, shipping was very fast and the barefoot feeling is something I wish I tried sooner
The Fission .01 is hands down the best flat-footed shoe I’ve worn. Whether I’m running, playing basketball, or weightlifting, they feel incredible. As someone who prefers flat-footed shoes, this is by far the best I’ve tried. Style-wise, they’re unbeatable. I constantly get compliments when I wear them out. It’s rare to find a shoe that combines both top-tier performance and sleek design, but this one does it effortlessly. Plus, they pair well with almost any outfit. Huge thanks to Abstract Chimp for their amazing craftsmanship and dedication.
When I travel for work, I love wearing these shoes! They’re great for long walks and longer flights.
These shoes look and feel great. I prefer them over the competitor brands because of their functionality and style.
I recently tried out these barefoot-style sneakers, and they’re a fantastic find. Stylish, comfortable, and true to the brand’s intention of mimicking the feeling of walking almost barefoot, these shoes really deliver. The design is sleek and versatile, making them a great option whether you’re out on a hike or just out and about for the day. What I really appreciate is how they allow your feet to move naturally, without sacrificing support or comfort. It’s a shoe that feels as good as it looks—whether you’re tackling outdoor adventures or just enjoying some leisure time, these sneakers are a solid choice.
I’ve been wearing barefoot shoes for over a year now and have been looking for a pair of basics that I can wear every day. I think I finally found them!! These shoes are simple, cute and match all my outfits. I wear them to work events, the gym and out and about. Not to mention they’re super comfy.
Silver grey color with grey sole would be a great addition to the color choices.
Good quality versatile style, might have to get it in black
Originally ordered suggested 1/2 size up reluctantly. Ended up sizing down to my usual size as I’ve been in barefoot shoes for several years now. Abstract Chimp made the exchange fast and simple. Definitely comfortable pair of shoes.
These sneakers are well made. They meet all my barefoot requirements and they manage to have a classic and contemporary aesthetic at the same time. I have them in black and cream so what ever I’m wearing I’m good to go. I’ve found that the wash very well too.
Great shoes.
Love wearing my abstract chimp shoes, good quality, great design and great customer service!
My wife bought me these shoes. I have been on the minimalist zero drop train for over 20 years. These are wonderful and are insanely durable. They are my main shoes when it is cold outside and I am not at work. Put through the paces am y times and they still look new.
I will definitely be buying these again. I have been contemplating getting another color
At my local climbing gym these shoes were brought to my attention. I decided to check them out with my son and I am happy we did. I ended up buying two pairs that night. The cream and the black pair for my husband. They are comfortable for a zero drop shoe and quite durable. My husband uses them everyday. He was thrilled that I stumbled upon an awesome find. Also I love how they are easy to clean.
When I brought home a pair of Chimp shoes and showed them to my husband, he said that they look like good shoes and maybe I should get a second pair. So I did. I love that there is no elevated heel to tilt my body forward because my goal is straight posture. These feel more grounding than other shoes , made of natural materials. I hope the company does really well!
I bought 3 pairs for myself and my husband. We wear them every day and love them!! Very comfortable and when they get dirty I just throw them in the washer. Runs about 1/2 size small but I was made aware of that before I ordered and sized up to perfection!!
I love these shoes! One of the best shoes I ever worn. Well worth the money
FISSION.01 / BLACK / CONSTRUCTION
Why it feels different.
Three choices that shape how fission.01 fits and feels.
Room at the front.
The wide toe box leaves space for natural toe spread. Toe room and overall shoe width are different parts of fit.
Level underfoot.
Zero drop means the heel and forefoot sit at the same height.
9 mm, in two layers.
A 6 mm recycled rubber outsole and a removable 3 mm insole keep the construction low and flexible.
ON FOOT / CUSTOMER EXPERIENCES
In their own words.
Wonderful minimalist shoes
My wife bought me these shoes. I have been on the minimalist zero drop train for over 20 years. These are wonderful and are insanely durable. They are my main shoes when it is cold outside and I am not at work. Put through the paces am y times and they still look new.
I will definitely be buying these again. I have been contemplating getting another color
Great barefoot shoes that don’t look like barefoot shoes.
Great shoes
I have been wearing barefoot shoes for over ten years. I bought Xeros, Vivos, Lems, Tadevos, Hobibears, Magical Shoes, Saguaros, Merrells and others.
These feel the closest to being barefoot and together with my Magical Shoes look the most like regular shoes.
If there something I would like them to have is dark color uppers on white or natural soles. Fortunately, you can use fabric dye to get a different color upper since it’s made with a natural fiber. I dyed mine yellow at first and orange after wearing them a while. Perfect results. I would however like the option of colors on natural soles.
They do run a bit small and a 1/2 size bigger. would’ve been a much better fit. I still give them the top mark for looks and comfort.
Excellent everyday go to foot wear
"These sneakers are well made. They meet all my barefoot requirements and they manage to have a classic and contemporary aesthetic at the same time. I have them in black and cream so what ever I’m wearing I’m good to go. I’ve found that they wash very well too."