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SummitRocket™ 20 VestPack

Details OU5525


A feather-light vest pack for rapid ascent alpinists. A new concept in super-lightweight, unrestrictive alpine packs combining the comfort of a race vest coupled with the volume of a summit pack. Designed for easy accessibility without removing the pack. On-The-Fly compression eliminates bounce and stabilizes load by keeping pack close to the body.
Style# 1496411


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Features & Specs

  • Weight: - 12 oz. / 340 g. -
  • Reviewers rated this product: - True to Size -
  • Pack Capacity: - 1250 cu. in. / 20 L -
  • Good For: - Alpine Climbing -


A feather-light vest pack for rapid ascent alpinists. A new concept in super-lightweight, unrestrictive alpine packs combining the comfort of a race vest coupled with the volume of a summit pack. Designed for easy accessibility without removing the pack. On-The-Fly compression eliminates bounce and stabilizes load by keeping pack close to the body.



  • Fabric Accent: 4-Way Stretch Woven
  • Fabric Body: 100D HT Ripstop Dobby Nylon (100% Nylon)


  • Pack Weight Regular: 12 oz. / 340 g.
  • Pack Capacity Regular: 1250 cu. in. / 20 L
  • Pack Torso Regular: 16.0 in. - 22.0 in. / 41 cm - 56 cm


  • Fit and comfort of a vest combined with the volume and function of a summit pack
  • Comfortable, low profile, wide, lightly padded shoulder straps distribute weight effectively and shed snow and ice
  • Remarkably stable load control with OTF (On-The-Fly) compression system is easily activated while wearing the pack
  • Four easy access pockets of varying sizes on shoulder straps keep necessary items in reach
  • Convenient zip top access main compartment
  • Versatile compression system secures climbing gear and overloads, but can be removed to reduce weight
  • Easy tool and gear carrying setup: dual ice axe cradles and mini daisy chains


SummitRocket™ 20 VestPack is rated 4.4 out of 5 by 5.
Rated 5 out of 5 by from Great pack I've spent the past five years in search of the perfect small backpack, and this might just be it. It's light, has just enough room for everything you might need for a day at work or a weekend trip, and it's just about perfect for running. I've never had another pack that keeps its load so well under control while I'm moving, all without making me feel constrained. The chest pockets are great and have ample room for everything from keys to a sizable water bottle, sunglasses, a snack, or all of the above at once. The one thing I'd like is some tiny bit of internal organization. A velcro pocket, a small zip pouch inside. Otherwise, still a solid A.
Date published: 2018-05-10
Rated 5 out of 5 by from The pack for run commuters Let me start by saying that Mountain Hardwear made a winner with this pack. The points you see below are merely suggestions for next year's version, in the hope that the company's designers read these reviews and can make some small improvements to an already amazing product. This review is written in the context of me having tried pretty much every larger running-specific pack/vest on the market that I can find, including the Ultimate Direction Fastpack 20, the Mammut MTR 201 (in both sizes), the Patagonia Nine Trails 15L, and the Montane Dragon 20. I keep my suits and dress shoes at the office, so what I carry in my pack is: underwear, socks, under shirt, lightweight workout pants, lightweight insulated jacket, cycling shorts, and mountain biking shoes. It’s the bike shoes – which I use for spin classes after work – that make smaller running packs unsuitable for my morning runs to work. In the interest of thoroughness, I bought every large pack on the market to compare them when fully loaded, and this pack tops them all. I especially like that MH didn’t sacrifice all comfort to drop a few ounces. The padded back-panel and shoulder straps are part of what bumped this to the head of the pack. (Sorry. I couldn’t resist.) Some small areas for improvement are: -Make the nylon webbing straps that attach to the bottom of the shoulder straps at least six inches longer. I’m 6”3” tall and about 215 lbs with a 42” chest. When the pack is fully loaded it can be pretty difficult to get the straps on and off. If I pack it poorly then the shoulder straps can be so tight that they pull my shoulders back. This is great for posture, and not so great for running comfort. -Make the compression straps go straight across the pack instead of zig-zagging along the sides. I liked the idea of the zig-zagging straps until I actually tightened them. The locations of the connection points makes the pack arch away from your back when the compression straps are tightened, and this exacerbates the niggle about too-short shoulder straps that I mentioned above. MH partly mitigates this issue by using clips to attach the compression straps. I have moved mine so that they now go straight across the top and bottom of the pack. -Add an internal pocket. Just one. That’s all I need! I would, of course, love for the pocket to have an external zipper, but I’ll settle for an internal pocket. Currently I have to put my phone, wallet, and keys into a ziplock bag and toss them in with everything else. A pocket inside the pack would go a long way towards helping me find these small items at the end of my run.
Date published: 2015-10-19
Rated 4 out of 5 by from almost perfect Purchased for overnight super-light runs/backpacking in the high sierra and one or two day mountaineering jaunts. Feels great running; no bouncing or slop. Holds just the right amount of gear for a fast/light overnight trip in reasonable weather or a day of alpine climbing in mixed weather. Stays out of the way of my harness. Doesn't flop around during technical climbing. Fits my body well: 5'10" with a deep chest. Two gripes: 1. Give it a removable framesheet (like the "hardwave" on the 30 and 40. This would prevent bulky loads and full water bladders from rounding out the cross section and making it uncomfortable 2. Needs more options/space for storage in the front vest pockets. As is, they're just too small and non functional. I'd like to be able to carry two water bottles and/or more food up front. If weight is an issue, the holsters/pockets could be removable.
Date published: 2014-01-29
Rated 3 out of 5 by from Turns into a burrito A vest pack is all about trying to increase stability and comfort, without adding a hipbelt. However, when packed full, it take's the shape of a tube which can make it uncomfortable where it contacts your back, and also reduces the stability. If Mountain Hardwear added a removable Hardwave framesheet, it would have solved this problem. Hopefully next year, they will add it. I'd also like to buy this in a 30 liter, as 20 liters is a tad small for some trips, and just right for others. It also needs to be hydration bladder compatiable.
Date published: 2013-05-14
Rated 5 out of 5 by from LOVE IT Great Pack fits well and the shoulder straps do not dig into your shoulders. Love the pockets which we use to put extra lens for the camera in. Plenty of space for day hikes and even when overstuffed with items. First aide supply food, water filter and extra clothes it carries very well. Our clients love the way they look and as well want them as well.
Date published: 2013-04-29
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