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Mammut Lithium Speed 20L Backpack


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Lithium Speed 20L Backpack

Mammut's Lithium Speed 20 Backpack is an all-around mountain player, as long as the trail run, multi-pitch climb, or hike is a fast one. Its Contact Vent system pairs a well-ventilated, cushy back panel with padded shoulder straps and waist belt to ensure comfort on the ascent. The Lithium Speed is hydration-compatible so you can keep your reservoir accessible, and it carries your trekking pole when the ascent gets steep or even vertical. There are plenty of pockets, large and small, to organize your valuables, topo information, and lunch intelligently, so you can skip the rummaging and get back to the trail faster.

  • Lightweight pack for speedy pursuits
  • Contact Vent suspension increases airflow
  • EVA shoulder straps for comfortable carriage
  • Hydration-compatible to keep water on-hand
  • Trekking pole attachment for hands-free hiking
  • Side straps compress the load when under-filled
  • Item #MAM012L

20L (1220cu in)
Contact Vent, EVA foam
Shoulder Straps
Waist Belt
Hydration Compatible
3 zippered, 1 hip belt
Trekking Pole Carry
side straps
Recommended Use
hiking, sport climbing, trad climbing, trail running
Manufacturer Warranty
2 years

Tech Specs

What do you think about this product?


>Rating: 5

Everything you need in a day pack!

I've used it several times

This backpack is fantastic! It is small and light enough to wear mountain biking, but roomy enough for long, all-day hikes. I love the water bladder storage sleeve and the fact that the backpack has a supportive back so the water bladder doesn't make the pack lose shape. I also love that is has supportive hip belts with pockets! A lot of small packs forget this feature which is truly necessary for comfort and support. There are also just the right amount of pockets! The small zippered pocket at the top is perfect for phones, keys, chap stick, and other small items. There are also zippered pockets on the front, which are great for layers, maps, snacks, and other bigger items. The main part of the pack is only 20L but fits so much! I was surprised by how much food and clothing I was able to fit on a long day hike. This pack is comfortable, light weight, just the right size for a day pack, and has all the right features. 10/10 recommend!

>Rating: 5

spacious day pack

This pack is comfortable, ultra light, and has creative solutions for storage. I especially enjoy the phone pocket.

>Rating: 5

Great day pack

I've used it once or twice and have initial impressions

I Demoed this on a mountain bike trip in Moab and it worked out great. Very lightweight and insanely comfortable! Most backpacks I wear while riding slosh around and can be a pain.. Not this guy! I would definitely recommend to anyone looking for a very lightweight, breathable, and comfortable day pack.

>Rating: 5

Great small little pack

I've used it several times

I use it primarily for biking and carrying any necessary items for the day! The space is small but would be enough for a few harnesses, shoes, and anything else that would be needed!

>Rating: 5

Excellent minimalist day pack

I've put it through the wringer

I use this for my day bag in a variety of applications (hiking, trail running, air travel, etc.), and it’s excellent for these purposes. The pack is minimalist (which to me is a positive) with a slightly padded waist belt and shoulder straps and a comfortable but minimal back panel. The pocket arrangement is typical of a small zip-top pack, the side mesh pockets easily hold my 27 oz water bottles, and the single waist belt pocket (yes, there’s only one – a minor gripe) is large enough to be functional and accessible. The pack carries well and holds the load close to my back. All in all, I’m very pleased with this pack and highly recommend it. The Mammut Speed 20 has relegated my Osprey Talon 22 to the closet (and perhaps soon the donation bin). If you want a fully featured whiz-bang pack with a trampoline suspension, extensively padded shoulder straps and waist belt, Nalgene-size side pockets, and the weight that goes along with these features you should look elsewhere. But if a minimalist, lightweight pack which fits comfortably and functions well is what you need, look no further.


Can the side pockets fit a Nalgene bottle?


Can the side pockets fit a Nalgene bottle?