Mammut
Lithium 20L Daypack
Best lightweight pack for comfortable day hikes and quick outdoor adventures.
Designed specifically for the female form, this pack excels on quick, light hikes where agility is key. It features a ventilated suspension system that keeps the load stable and comfortable against the back, even during high-output movement. With integrated hydration compatibility, a removable rain cover, and thoughtful pocket placement, it balances organization with a minimalist profile. The durable, recycled materials are treated to repel moisture, ensuring gear stays dry during unexpected weather. It is a versatile companion for those who prioritize speed and efficiency on the trail.
$134.95
Owner Satisfaction
4.6
/ 5
Category Rank
1935
/ 13819
#1935 in Backpacks
Price vs Category Average
+24%
Above average
Material
210100
/ D recycled nylon Dragon, D recycled nylon Robic, PFC-free DWR coating
Who it's for
- Day hikers prioritizing minimal weight and maximum comfort on trails.
- Organized adventurers needing quick access to gear and hydration on the go.
- Outdoor enthusiasts seeking a reliable, long-lasting pack for various adventures.
Who should skip it
- Backpackers needing larger capacity for overnight or extended trips.
- Users carrying heavier loads who prioritize maximum cushioning and support.
- Technical climbers or mountaineers requiring specialized features and attachments.
Performance breakdown
Ventilation Efficiency
3D EVA foam padding keeps air flowing during high-output summer climbs.
Load Stability
The contact suspension system keeps gear locked tight during rapid movement.
Ergonomic Fit
Geometry specifically tailored for the female frame ensures superior comfort.
Weather Protection
PFC-free coating and a removable rain cover handle unexpected trail storms.
Organization Utility
Thoughtful pocket placement balances minimalist design with essential gear access.
Weight-to-Capacity Ratio
Extremely lightweight construction maximizes efficiency for fast-and-light day hikes.
Key Specs
Material
210D recycled nylon Dragon, 100D recycled nylon Robic, PFC-free DWR coating
Capacity
20L
Weight
1.31 lbs
Dimensions
7.4 x 20 x 9.4 inches
Hydration Compatible
Yes
Closure Type
Zipper
Intended Use
Hiking
Sternum Strap
Yes
Know before you buy
Yes, the Lithium 20L is engineered with a suspension system and harness geometry tailored to the female form, ensuring a more comfortable and stable fit during active movement.
The pack is constructed with water-resistant recycled nylon and a PFC-free DWR coating to handle light moisture. For heavier downpours, it includes an integrated, removable rain cover that provides full protection.
Yes, the pack is fully hydration-compatible, allowing you to easily integrate a reservoir for hands-free drinking on the trail.
Yes, the waist belt is removable, which is helpful if you prefer a more streamlined profile or don't need the extra stability for shorter, lighter hikes.
The Lithium 20L is quite lightweight, weighing in at approximately 1.31 lbs, making it an excellent choice for hikers who prioritize speed and agility.
It features a ventilated 3D EVA foam padding system that promotes airflow, helping to keep your back cool and comfortable even during high-output activities.
Still have a question?
Ask Hayley anything about this product before you decide.