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artist series
recycled materials
run everywhere
free shipping on
orders over $50
free 60 day exchanges
+ no-fuss returns

3" AFO Split Short

3" AFO Split Short

M's 3" AFO Split Short

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run everywhere guarantee
free shipping over $50
free 60 day exchanges
Regular fit, Size Chart Aron is 5'11" and wears size MWilliam is 6'1" and wears size M

Ultra-light, high-performing split short made to go all out; built-in performance brief liner. Read more

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Print Story - Star Cover

As part of our American Southwest Collection, this print was designed by Santa Fe-based multimedia artist and pro mountain trail runner Christian Gering. Proliferating a single star (represented by a four-pointed directional cross) into a sky pattern, this joyful composition symbolizes the never-ending fabric of time and represents a connection across generations to ancestors who guide us, lighting our path.

Print Story - Under Cover

As part of our American Southwest Collection, this print was designed by Santa Fe-based multimedia artist and pro mountain trail runner Christian Gering. ​​A monochromatic, reflective version of the “Star Cover” print rotated on a 45º axis like stars shooting across the night sky. This design represents a connection across generations to ancestors who guide us, lighting our path.


Weightless feel
Ultra-light AFO stretch woven fabric for a barely-there-feeling shell

Cool and dry
Fast dry time, high breathability + excellent sweat wicking for a cool, comfortable ride

Built-in brief liner
Integrated moisture-wicking performance brief liner

Breathable waistband
Perforated knit waistband with internal drawcord provides a secure fit that is both breathable + comfortable

Softer, breathable waistband
An updated knit waistband with external facing drawcord provides a secure, comfortable fit while perforations enhance breathability

Split action
A deep side split ensures total freedom of mobility in stride

Smooth finish
Bonded hem seams ensure an anti-chafe fit + clean finish

Keep it secure
A secure back zip pocket has a nylon pull for easier in-motion access; can fit most sized phones

Keep it separated
Internal drop down brief pocket for key/card includes a key loop bungee* that doubles as hang loop

Exclusive collab design
This print is designed exclusively for our South Africa Collection by Cape Town-based artist, Al Luke

Stay seen
Signature reflective logo on front and “watermark” reflectivity on back increases visibility in low light

*the s-biner clip, key ring + keys not included with shorts—sorry, we need our keys

materials + specs

88% recycled polyester, 12% elastane

Performance brief liner
94% polyester, 6% spandex

106g / 3.7oz (M’s Medium)

Garment made in Vietnam

Fabric Callout


Ultra-light and fast drying, AFO is a stretch woven made from recycled polyester. We use it across our Singlets, Splits, Middle Shorts, and 2-In-1 Traverse Shorts for high-performance styles that feel lighter-than-air.


care instructions

Wash when needed on cold, delicate cycle with like colors

Tumble dry low or hang dry for best results and lifespan of the garment


Our AFO fabric is composed of 88% recycled polyester. We use high-grade recycled polyester made from 100% post-consumer recycled plastic like rPET (commonly found in single-use bottles and containers) to reduce the impact of our apparel without sacrificing on performance, durability or comfort. 

AFO fabric is also bluesign® certified meaning it is free from harmful chemicals and is fabricated in a way that meets a high environmental standard.

Learn more about our sustainable initiatives here.


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Customer Reviews

Based on 98 reviews
Timothy N.
Wear it for: Running
Product Fit: Runs small
Height: 5'1" to 5'3"
Usual Size: XS
Size Purchased: S
only the hardcore will understand

when other hardcore runners interrupt their runs, pause their watches, extract their earbuds to chase you down to ask you “where did you get your fit?” - you know that you are doing something right!

this running gear cannot be beaten, or even matched! Timmy N - Palm Springs, California

Jeremy S.
Wear it for: Running
Product Fit: Runs large
Height: 6'0" to 6'2"
Usual Size: M
Size Purchased: L

M's 3" AFO Split Short

The O.B.
The best shorts ever !!

I love these shorts and I wear them during my race, long runs and speed sessions. I own 4 pairs in black. My running friends love these shorts.
They are light weight, have a back pocket that holds my apartment key card or 4 running gels. They do a good job in trying to wick away the sweat while making me look fast and cool. I have had no chaffing issues.

Best pair of shorts

These are very light and sexy. I run 50-60 miles a week and I have not had any issues (chafing). I absolutely love the pockets and something super nice is that they dry super fast!!! The only thing I wish was better is the liner. It is a bit too old school. I still think these ones are my favorite ones!

Renjie Y.
My favorite running shorts

I like how the underlying part is so soft and comfortable. The pattern is so fashionable. The best running short I owned

Sven A.

Will buy again!

Nice running shorts for humid summer weather

I got these for my morning 5 mile run in hot, humid Georgia summers. These are super comfortable and manage to wick moisture away (as much as possible in the humidity here) better than my other running shorts. Would definitely buy again.

Dana C.
Comfortable and stylish short

Wide waistband, lightweight and colorful. I have three! Highly recommend!!

Mark B.
New favs

Love these short. Light weight, comfortable and short. One of my new favorite pieces.

My new favorite shorts

Excellent product! These shorts are super light and dry very fast. They are my new favorites! I’ll definitely buy more. I do wish the price was a little lower though. I caught these on sale.