Lightweight and ultra-specific, the S/LAB Ultra 10 is designed for seamless hydration and essentials storage.
What Our Gearhead® Experts Are Saying:
“This vest is so lightweight, it feels like it’s not even there. With quick-access front and rear zippered pockets and optimized storage for long ultra runs, this vest has everything I need for smooth races and adventures."
Born from the vision of François d’Haene, the Salomon S/LAB Ultra 10 is a high-performance hydration vest built for ultra-endurance athletes. Its featherlight construction, combined with intuitive storage and hydration solutions, ensures you stay prepared for long distances without added bulk.
Designed with symmetrical zippered rear pockets and strategically placed front pockets, the S/LAB Ultra 10 makes hydration and gear access effortless—even at full speed. Engineered for precision and comfort, this vest is a game-changer for anyone tackling the demands of ultra distances or technical trails.
Details
- Lightweight hydration vest tailored for ultra running
- Easy-access front pockets for hydration and nutrition
- Symmetrical rear zippered pockets for balanced storage
- Two zippered flask pockets for secure hydration on the go
- Optimized for rapid gear and flask access during races
- Stretchable, breathable materials for long-distance comfort
- Item #SALZAO3
- Volume
- 10L (610 cu in)
- Waist Belt
- integrated
- Pockets
- 1 front hydration, 1zippered rear, 2 zippered flask
- Gear Loops
- yes
- Trekking Pole Carry
- yes
- Claimed Weight
- 4.58oz (130g)
- Activity
- trail running
- Manufacturer Warranty
- limited 2 years
Reviews
Q&A
What do you think about this product?
Overall Rating
3.5 based on 32 ratings
Review Summary
Customer Images
Here's what customers have to say
The product has a mixed reception, with users praising its comfort, lightweight design, and functionality for long-distance running, but also reporting issues with loose front pockets, unstable water bottle holders, and accessibility challenges. Durability concerns have also been raised. While the overall design is well-received, the storage and accessibility problems appear to be significant drawbacks for many customers.
AI-generated from the text of customer reviews.
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Selecting an option will reload the available reviews on the pageAugust 29, 2025
Very comfortable.
I think this vest’s aim is to provide comfort over utility. It’s very comfortable and hugs the body well. I’m upgrading from an older sense 10 litre vest , and I like to carry a 3rd flask. There’s no big pocket in the back to stash an extra bottle and you can’t use a bladder with it is my only gripe - but I knew that before purchase and added the pulsar belt to my order for some extra storage. I do like that the bag is a stuff things in from the top rather than a side zipper. The front non zippered pockets are plenty deep enough to hold lots of nutrition and the rear side pockets might be a place to stash some gloves , beanie , wallet. It also has doubled zippered pockets above the bottles - I wish one of these could be waterproof for my salt tabs, that way I wouldn’t have to mess with a ziploc or other container. Anyway I’m really enjoying it so far.
Originally reviewed on salomon.com
August 22, 2025
VERY GOOD VEST
Feels Incredible light and cool. Y The only thing I would add is a bigger zippered pocket on the front side.
Originally reviewed on salomon.com
August 11, 2025
Almost great
The vest fits well, is light and smooth to the skin. The bottles are ok, didn't leak. Unfortunately, the front pockets are useless. Phones and gel packets bounce right out. Putting a phone in the side zipper pouch makes it hard to access, and pushes out the side, which then chafed against my inner arm. Returning after only one run. If the pockets don't hold anything in, the vest loses most function.
Originally reviewed on salomon.com
July 8, 2025
Excellent after modifications
Excellent vest with great fit and soft, breathable fabric. Unfortunately it needs several modifications to work properly. I don't know why Salomon couldn't have figured these out in testing. First off, the front open pockets are way too big at the top with no elastic. This causes gels and other items to fly out while running. The fix is to fold a portion of fabric at top of pocket and sew it so the opening is smaller. Now my phone and gels stay put on fast descents. Next, the water bottle retainer straps are too large and don't hold the flask caps tight. Tying a knot in each strap makes them the proper size. Lastly the screen printed quote by Francois on inside of vest mesh rubs your shirt and pills fabrics. You can rub the print off with your fingers until it's all gone. Takes about ten minutes. All this for one of the most expensive vests is kind of ridiculous but it's worth it since it fits so well. I love the open main back pocket that you can reach into without removing vest. The side zippers are a challenge to access but they work and hold salt tabs/ small items well. It's more comfortable than any of the other Salomon vests so I think it's worth it once you spend some time fixing it. With some small improvements the next version could be perfect.
Originally reviewed on salomon.com
June 27, 2025
Amazing - exactly what you want for going fast
I don’t understand the criticism of the vest, it’s made to be minimalist, this is not a “bring anything and everything vest”. The vest is amazingly comfortable, you just forget you’re wearing it. Capacity is good with a ton of pockets, you can access 4 zipper pockets without taking it off (2 shoulder, 2 ribcage). I did have to tie a know in the water bottle holder bungees, but now they are completely locked in. Sometimes gels get loose if you’re bombing down trail from The front pockets, but that’s any vest. My only complaint is I wish the back horizontal pocket had a Velcro or something. Have only had my phone pop out one time, but it would provide my peace of mind. Fabric is much better, softer than the standard salmon vests, no chafing ever. This is the exact vest you want if you’re trying to go fast
Originally reviewed on salomon.com
June 25, 2025
Not as reviewed by others
It’s an amazing piece. Super light and stable. The flasks stayed in place and the vest never budged. It’s intended for people who are looking for something light weight that can hold their stuff without budging and it did that. If you are an influencer wanting to fetch your phone every mile for a video then this is not for you because if you put your phone away, then you keep it there. I have taken it on many LONG runs since getting it a month ago and it’s been great.
Originally reviewed on salomon.com
June 24, 2025
Not fit for use
Bought this as wanted it for slightly longer runs that required more kit. The back pocket is fine and fits lots. The front pockets however are awful, really loose and baggy so my phone and nutrition bounce out when I’m running. The zip pockets are small and on the side, making them hard to access and also not big enough for a phone. So really can only be used to carry water and a coat, which is useless. Material on the inside is lovely and nice on the skin, the outer material though is thin and snags easily. Looks nice though.
Originally reviewed on salomon.com
May 18, 2025
Dont let the Amazing reviews fool you.
The vest is overall fine. I had to double knot the bottle straps just to keep the bottles from flopping around. The pockets are pretty bad, and there’s no room for a phone. I hope that those of us who purchased this supposedly “ultra” vest, including myself, can send it back and receive a product that’s actually worth the money and reliable for trail running. Because you can’t go ultra in this vest.
Originally reviewed on salomon.com
February 9, 2025
Pockets don’t hold anything
The best fits great but the two big pockets in the front are not tight so my phone and gels fall out disappointed.
Originally reviewed on salomon.com
February 2, 2025
Enjoying it so far
Best meets my expectations. I wanted something light weight and unnoticeable to carry more than my pockets and belt bag allow - mission accomplished. Really provides peace of mind on my weekend long runs, and worked as desired at my mountain marathon this weekend.
Originally reviewed on salomon.com
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