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Description
Climb comfortably in our lightest, most breathable fully insulated hoody.
The Proton SL Hoody was previously the Proton Lightweight Hoody.
Proton
Air permeable mid layer insulation with abrasion and weather resistant outer surface.
Superlight
Superlight materials and design, emphasizing lightweight and packability over durability.
Fair Trade Certified™
Produced in a Fair Trade Certified facility. Building worker well-being into our product DNA.
Multi-use
Versatile high performance designs for diverse activities and conditions.
Description
The lightest, most breathable option in our Insulation Collection, the Proton SL Hoody takes the guesswork out of warming up on cold climbs and other high-output activities in cool conditions. The knit insulation holds its loft and shape—no matter how often you stuff it into the bottom of your pack. More importantly, it allows your body to breathe, so you’re not left a sweaty mess after you have to step on the gas to get through the crux.
What's been updated:Updated with recycled Fortius™ fabric for improved durability, and chest pocket and design lines that align with the Proton Collection.
Features & Specs
Technical features
Moisture-resistant outer face fabric
Breathable
Lightweight
Durable
Construction
Fortius™ Air 20 face fabric effectively balances air permeability and weather resistance with lightweight durability and stretch
Fitted, with articulated patterning for mobility and comfort
Garment Centre Back Length: Size M is 29"/72cm - Varies by size
Fabric treatment
FC0 DWR (Durable Water Repellent) finish repels moisture and is free from intentionally added PFAS
Hood configuration
Helmet compatible
Adjustable insulated hood
Pocket configuration
Two zippered hand warmer pockets
Single stretch woven zippered chest pocket
Sustainability
Contains materials that meet the bluesign® criteria
Body - bluesign® approved material
PFAS (Per- and polyfluoroalkyl substances) Compliant
SizeXS, S, M, L, XL, XXL
Weight 370g / 13.1 oz
Fit Fitted
Sizing chart
Men's Our size guide provides a general idea of how your body measurements correspond to our garments, however it does not fully reflect each item's unique specifications. Each piece is designed with specific fits tailored to the intended activity, taking into account ergonomics, comfort, layering systems, and optimizing the performance of fabric technologies.
Jacket/shirt sizing chart - new sizing
Size
Sleeve
Chest
Waist
Hip
Your body measurements in centimetres
XXS
78
84
69
83
XS
81
89
74
88
S
83
94
79
93
M
86
102
86
100
L
89
109
94
108
XL
91
119
104
118
XXL
94
129
114
128
3XL
96
139
124
138
NOTE: Men's fit has been updated with a revised fit. Medium size remains unchanged. Smaller sizes are now tighter and larger sizes are now looser. Arc'teryx sizes are intended to fit the above body measurements. If your measurements are between sizes, select a larger size for a looser fit or a smaller size for a tighter fit.
Our trimmer fit is patterned to stay close to the body through the chest, waist, hip, and thigh. Its low profile eliminates bulk, moves with the body, and fits comfortably over first layers or under outer layers.
I now own 5 of these, need I really say more! These hats are extremely stylish and comfortable especially if you have a larger head. Personally they’re a little big for me since I have a smaller head but I still find them incredibly soft and great for cooler weather. They look great for casual use but I’m not sure about the durability for activewear, only time will tell.
It was my third time getting something from Footprint Co. It’s always a great purchase when I get it from them. The backpack I got this time is also really nice.
Overall I really like this bag. I haven’t had the opportunity to take it into the field yet but my initial impressions are very positive. The materials and fabric feel robust, highly durable and are very similar to my larger alpha fl 30 pack. The size is exactly what I needed for short trips and I love the simplistic design. I look forward to using this a lot over the next few months really testing the durability. My only minor disappointment is the color. Per the images displayed on the website I thought I purchased this bag in a really nice light grey color (cloud), however clearly this bag is essentially black. According to the product tag I received the correct product, but unfortunately it looks like the bag color and images displayed on the retailer website were inaccurate. Again this is a small issue as the bag is great and the color is fine, I would’ve simply preferred the lighter color scheme that I was expecting.
Absolutely beautiful shoes, they shipped so so fast and was able to find the exact color and size we needed for our daughters! Very very pleased. I would definitely buy here again.
Absolutely beautiful shoes, they shipped so so fast and I was able to find the exact color and size we needed for our daughters! Very very pleased. I would definitely buy here again.
Awesome experience I ordered the shoes at 11 in the night the best part they were on discount having just released! they came in exactly 2 days later brand new in box and they were delivered in the morning! If I get my package in the morning I'm gonna be 1000% more excited then had it came in the afternoon! The shoes are awesome and are my daily drivers! I wrestle and these have done me nothing but good! I approve them and this website!
The customer service is very good, shipping is very fast, and the items match the ordered model, color, and size. They are very comfortable to wear. This model has a wide fit and great support. My work requires me to walk all day, and these are very comfortable. I highly recommend this shop!
L❤️VE THIS 💕
Very nice mid weight jacket. It is a regular fit which adds a bit more room than the fitted jackets by Arctyrex. A little pricey but worth it if you appreciate quality. Fit and finish is excellent.
Got these for my son. These are the only shoes he will wear and he wears them until they are way worn!! I got him 2 pair this go around and he is beyond excited! And yes, the Vivo Barefoot Men’s Primus Lite are a fantastic shoe for fit, arch suppprt, lasting wear, easy to care for, and the most comfortable shoe out there. And as someone who is skeptical more often than not when ordering online, I am thoroughly impressed and happy with all aspects of FootPrint company. Will continue to purchase from here.
This is my second day wearing the Gobi II sneaker while working as a pro-driving coach with the Mini Copper Autocross event with the BMW UDE event in Chicago. I’m very pleased with the all day comfort of this shoe and the wide toe box😊❤️
Took these on my two week trip to Switzerland and they were awesome. Handled all the trails and hikes with ease. Obviously had to avoid water and snow, but it wasn’t an issue since the snowpack was gone.
I’ve always been pretty basic, I have never had issues or having to change my shoe size, regardless of the brand.
I was "married" to the Adidas UltraBoosts for about 7 or 8 years—they were the only thing I wore.
It was only a few months ago that I got curious to find out what was new out there.
I did what basically everyone does these days: I asked Google. One thing led to another, and I ended up watching review videos on YouTube.
Long story short, big disappointment especially because it was the first time trying the brand.