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Active Skin 4L Set Vest

4.8 out of 5 stars
40 Reviews
$74.96 - $99.95
Up to 25% off


Size Chart


Why We Like The Active Skin 4L Set Vest

For running on less-intimidating trails, we wear this low-volume vest that prioritizes comfort and carries everything we need. The cut of this pack conforms to the body for a bounce-free fit that avoids causing friction or overheating. With modular storage and easy access to our water and other essentials, we feel prepared and confident on every run.


  • Optimized trail running vest for taking on shorter routes
  • Included soft flasks fit in chest pockets for ease of access
  • Pack is compatible with a 1.5-liter bladder for extra hydration
  • Body-conforming fit prevents bouncing and allows freedom of movement
  • Unique sternum strap construction provides easy breathability
  • Elastic cords and loops provide versatile carry options
  • Reflective details provide extra visibility on nighttime runs
  • Item #SALZ9O3
[body] 100% nylon, [back body] 100% polyester, [back insert] 89% nylon, 11% elastane, [body insert] 88% nylon, 12% elastane, [lining] 100% nylon
4L (244.1cu in)
Shoulder Straps
EVA padded
Hydration Compatible
2 front flask pockets (flasks included), 1.5L bladder sleeve
Reservoir Included
2 500ml soft flasks
chest, side
[external] 2 front flask, 2 front stretch, 1 front zippered, 1 back zippered compartment, [internal] 1 zippered, 1 bladder sleeve
Trekking Pole Carry
customizable postion
[back length] 15in
Claimed Weight
7.1oz, [including accessories] 9.5oz
Manufacturer Warranty
2 years

Overall Rating

5 based on 40 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 8 reviews
5 Stars - 32 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

October 16, 2023

Perfect for long runs !

I can bring my electrolytes, gels and candies to carb up and stay hydrated during my longer runs. It's light and does'nt feel like I have a vest on !


Originally reviewed on salomon.com

5 out of 5 stars

August 24, 2023

Light and comfortable

Perfect product that gets the job done! I usually wear a L, sized down to a M and the fit is perfect. Not too tight, and doesn't restrict arm mobility. Used for many runs (long and short) and it has held up perfectly,


Originally reviewed on salomon.com

5 out of 5 stars

August 12, 2023

Perfect for the medium distance run

Perfect compact running pack for those on the skinnier side


Originally reviewed on salomon.com

5 out of 5 stars

August 5, 2023

Light and Comfy

I bought this last year when I started trail running. I have also used it occasionally for long xc skis because it is so easy to stow stuff but also i can easily access water and snacks from the front pockets. I am a sweaty runner, no issues with rubbing anywhere and it doesn't jostle. Great value!


Originally reviewed on salomon.com

5 out of 5 stars

August 1, 2023

Perfect for me

This is a bit on the smaller side which is exactly what I wanted. I only need to carry a packable waterproof jacket and some running gels (and of course my water). For a 50k or under this meets my needs well. It's comfy and doesn't move around or rub my skin anywhere.


Originally reviewed on salomon.com

5 out of 5 stars

July 23, 2023

Amazing bag

So happy with my purchase. It's great. It's really well design and holds on great. I'm 6'2 and 175lbs and the XL is a perfect fit. I can bring enoug nutrition, keys, phone and more to my ultras.


Originally reviewed on salomon.com

5 out of 5 stars

June 23, 2023

Best purchase for running

I was originally a bit skeptical about wearing more layers while running. I used to carry a water bottle that strapped to my hand for longer runs. After starting trail running and seeing the racing requirements and possible dangers, I gave in and bought this vest to try out. My biggest regret now is that I didn't buy one years ago. I can barely feel it on me when I run. The little extra weight has never slowed me down yet. I also love having the water flasks close to my mouth. This has made my running much easier and enjoyable. If you're like me and debating whether to get one or not, do yourself a favor and give it a try. Just make sure you take an honest measurement of your chest to get the right size. The correct size makes an enormous difference with these. Good luck to those looking, and see you on the trail!


Originally reviewed on salomon.com

5 out of 5 stars

June 21, 2023

Exceeded my expectations

I was thinking about buying it for a while and finally pulled the trigger and I wasn't disappointed. The product is so well built. The front pockets are perfect for nutrition and small gear like my phone or airpods. super comfy with or without a shirt. A must for any trail runner I'd say :)


Originally reviewed on salomon.com

5 out of 5 stars

June 17, 2023

Plethora of Thoughtful Features!

OK, I know this is an "older model" but, WOW! So many great features! Having used several running vests for years, Skin 4 is a major step up! Solomon's thoughtful design even includes a handy mini whistle!

Canyon Hiker

Originally reviewed on salomon.com

4 out of 5 stars

June 13, 2023

Awesome feel

I bought this almost 3 months now and I love the way it fits everything, especially how it feels on my runs. The pack does not shift or bounce so I love it

user image

Originally reviewed on salomon.com