Just In — American Southwest Part 2


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men'S tops

AFO-Vent SS Tee

Regular price $66 Sale price $52
Unit price  per 

AFO-Vent SS Tee

M's AFO-Vent SS Tee

Heads up, this gear will ship in 6-10 weeks. Learn more about pre-orders.


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run everywhere guarantee
free shipping over $50
free 60 day exchanges
Slim fit, Size Chart William is 6'1" and wears size M

Hit the trail in the AFO-Vent Tee — this lightweight, 4-way stretch tech top is made from a micro-perforated, abrasion resistant fabric for extra-breathable, durable running comfort. Raglan sleeves strategically remove seams from the top of the shoulder to optimally accommodate hydration vests or packs.

Explore more

Macro stretch, micro perf

Lightweight, structured 4-way stretch fabric with micro-perforations provides breathable, moisture-wicking + fast drying comfort

Pack Compatible

Raglan design removes seems from the shoulders while the AFO-Vent fabric stays put + won’t pill when worn under a vest or pack

Stay seen

Reflective logo on the front chest + “watermark” reflectivity on back increase visibility in low light



Lightweight yet tough
AFO-Vent is a durable, 4-way stretch nylon fabric that is abrasion resistant, retains its shape, resists odors, wicks moisture + dries quickly

Perforated venting
Micro-perforations enhance breathability

Raglan sleeve design, pack compatible
Strategically removes seams from the top of the shoulder for optimal comfort with a hydration vest or pack

Unhindered movement
Underarm gusset provides fuller range of motion

Minimal trims
Low-profile, mini-binding collar for smooth, lightweight comfort

Smooth finish
Bonded sleeve hems + hemline provide an anti-chafe, clean finish

Hang it up
An ultralight nylon hang loop is integrated into the back neck for easy hanging

Stay seen
Janji signature reflective logo on front chest + “watermark” reflectivity on back increase visibility in low light

materials + specs

80% nylon, 20% elastane

Garment made in Vietnam
Weight 87g / 3oz (M’s Medium)

Fabric Callout


Lightweight yet tough trail gear made from 4-way stretch fabric with micro-perforations for extra-breathable running comfort.


care instructions

Wash cold with like colors

Hang dry (they dry quickly!) or tumble dry low

Heads up — AFO-Vent may feel stiffer than you're used to

This fabric is more structured so that it won't ride up or pill from lots of use. Expect it to soften as you sweat throughout the run.


The first rule to making something sustainable? Build it to last. This top is built to endure the rigors of serious wear. We made it out of our AFO-Vent fabric — a durable nylon that is lightweight yet tough, abrasion resistant, odor resistant and will retain its shape. All trims are minimal and low-profile to reduce weight, fuss and stress points.

Our AFO-Vent 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 7 reviews
Cayce Reese
Awesome Shirt!

Honestly, I was a little skeptical of the material at first, but don't worry it is very comfortable and very breathable! I have the black one and it looks nice as a regular T shirt to wear and also is very comfortable for running in. It almost feels like you're not even wearing a shirt at all. It's a great shirt!

Love it

Light, comfortable and quick drying. Need it in more colors.

Great shirt for packs

Just as advertised - this shirt is perfect for running with a pack. Just two notes: (1) it does retain sweat under the pack (but I have yet to find a shirt that doesn’t), and (2) it’s slightly more fitted in the chest than I’ve found other Janji shirts to be. For reference, I’m a 6’1” male, ~170 lbs, and I wear medium in basically everything but am between medium and small for Janji’s AFO tanks/singlets. I’m a solid medium for the short-sleeve AFO-vent tee, but a small for the sleeveless AFO-vent.

Mike Eddie
Perfect fit

Really fun shirt. I bought it specifically for long runs to prevent chaffing. Worked like a charm. When you first put it on it does feel a bit like a napkin. Once you get moving and probably wash once or twice it softens up. Perfect fit for me. I am 5’10 165lb and bought the large.

Jeffrey May

Janji has really developed something great with the AFO Tee. They are easy to pack, and they don’t have seems where they could cause chafing. I’m so thankful they offered this material and process in a TEE!

Sean Motl
I wanted to like it more…

Don’t get me wrong, I love Janji products, and I will continue to be a loyal customer and member. I felt like this particular shirt was a little snug around the neck. When dry, it hit above the collarbones, which I found uncomfortable. In true Janji fashion, the magic happened when wet and sweaty. By the end of my runs, the weight of the shirt pulls it down a comfortable distance off the front of my neck. Maybe it’s just the shape of my body or personal style/preference. I’ll stick with their vent tank, which I think is definitely 5 stars!

Andrew Kounas

I have been looking for lightweight running for this summer. This is not the shirt I am 6’0 185lb and order a xl it doesn’t fit. It too tight and I can barely move my arms. I will be returning it! Your other products are great!