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Active Skin 4L Running Hydration Vest + Flasks

4.882352941176471 out of 5 stars
17 Reviews
Color:Tahitian Tide/Carbon/Peacock Blue


Size Chart


Why We Like The Salomon Active Skin 4L Running Vest + Flasks

Salomon's Active Skin 4L Running Vest is a performance-focused companion for runs over shorter distances where comfort is key. With its small size and stretchy, breathable fabrics, this vest keeps our on-trail needs locked in without weighing us down. The vest comes with two compatible soft flasks, perfectly sized for the front pockets for easy sipping.


  • Unisex trail running vest with updated comfort features for next-level performance
  • SensiFit stretch fabrics encourage freedom of movement without bunching
  • Includes two 500ml soft flasks that stow in front pockets for easy access
  • Additional storage for a 1.5L hydration reservoir in main compartment
  • Pockets and bungees offer space for on-trail essentials
  • Customer Quiver compatible for easy storage of trekking poles (Custom Quiver sold separately)
  • Item #SALZAOH
[face fabric, lining] 100% nylon, [side panels] 88% nylon, 12% elastane, [back insert] 89% nylon, 11% elastane, [back panel] 100% polyester
4L (244cu in)
3D Comfort back panel, SensiFit
Shoulder Straps
3D Airmesh, Quick Link elastic
Hydration Compatible
2 soft flask pockets, internal reservoir sleeve (1.5L)
Reservoir Included
2 soft flasks (500ml)
1 zippered back, 2 stretch front, 1 zippered front
Gear Loops
back bungee
Trekking Pole Carry
Custom Quiver compatible (sold separately)
6.7 x 13.7 x 0.4in
Claimed Weight
[vest] 6.9oz, [vest, accessories] 9oz
trail running, road running
Manufacturer Warranty
limited 2 year

Overall Rating

5 based on 17 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 0 reviews
5 Stars - 16 reviews

What do you think about this product?


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5 out of 5 stars

June 7, 2024

Perfect Running Companion

I wish I had bought ACTIVE SKIN 4 sooner! The quality is outstanding, and the materials are both durable and breathable. The smart design ensures that everything, from keys to gear, stays secure and doesn't bounce while running. The vest fits great and is adjustable via an elastic cord at the front. It's lightweight and vented, so you hardly realize you're wearing it. Additionally, there is plenty of storage, and the water bottles are fantastic. Overall, it's a solid 5 out of 5 stars for me.

Originally reviewed on

3 out of 5 stars

June 6, 2024

Good Pocket Design; Digs into Neck

I like the pockets and features of this vest; however after wearing it on two long trails runs I've found the top of the vest digs into my neck, causing chafing and it is very uncomfortable. The vest is also not very breathable and my shirts have been soaked after runs with this on. Hoping to try another version!


Originally reviewed on

5 out of 5 stars

May 28, 2024

Perfect for 15-20 mile runs!

I was in need of a best that could sustain my long runs without being overly bulky. I was happy to find the skin 4 as it provides just that! Enough room to pack whatever I need but I’d still light and refreshing on a longer run. Adding a bladder has been a blessing for up in the trails. Definitely recommend!

Reno Runner

Originally reviewed on

5 out of 5 stars

May 22, 2024

Broad Street Run

Perfect running vest! I used this for the Broad Street Run 10 Miler! Endless pockets. Came with water flasks. Didn’t move or shift. Perfect running vest! I’m wearing a XL

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Originally reviewed on

5 out of 5 stars

May 20, 2024

Active 4

Amazing quality, really lightweight and lots of pockets


Originally reviewed on

5 out of 5 stars

May 13, 2024

Great Pockets

I bought this a month ago and now use it for every run. My average runs are 8-9 miles. Active Skin 4 provides efficient pockets and full functionality. Love it!


Originally reviewed on

5 out of 5 stars

May 10, 2024

Love it

Doesn’t bounce, has a lot of room & I just love it. I’m so used to it now I can not go for a run without it lol


Originally reviewed on

5 out of 5 stars

April 22, 2024

Great vest

This is my favorite running vest. It fits perfectly and holds exactly what I need it to. It doesn’t bounce or shift when I run, and never rubs against my skin.

Amy B

Originally reviewed on

5 out of 5 stars

April 15, 2024

Great piece of kit

This is the first running carrier of this sort and it has been brilliant. It has been seamless to adopt, no wearing in required. Very comfortable and would recommend to anyone.


Originally reviewed on

5 out of 5 stars

April 15, 2024

Best investment

I wear my vest in every long tun I do and it's the best thing I have bought since started running long distance. All my gels don't move around whilst I'm running and I sometimes fitget that the water flasks are there because they sit so comfortably.

Jeanny A

Originally reviewed on