Mammut Tyin MTI Sleeping Bag
Best expedition sleeping bag for adventurers facing extreme, damp, cold climates.
This is the ultimate insurance policy for the world’s most unforgiving, moisture-heavy climates. By opting for high-performance synthetic insulation over down, you sacrifice a bit of packability for the peace of mind that your warmth won't vanish the moment things get damp.
$350.00
at
Mammut
Who it's for
- Backpackers camping in wet or humid climates
- Mountaineers tackling high-altitude or deep winter expeditions
- Campers wanting low-maintenance gear that handles heavy use
Who should skip it
- Ultralight hikers prioritizing pack space and weight savings
- Long-term owners seeking gear that lasts a lifetime
- Three-season campers needing a versatile, multi-temperature bag
Performance breakdown
Thermal Insulation
Five-season rating ensures warmth in the most punishing arctic conditions.
Moisture Resistance
Synthetic fill and DWR finish excel in damp, freezing environments.
Durability
Rugged construction withstands the wear of long-term expedition use.
Packability
Bulky synthetic insulation requires significant space in your expedition pack.
Ethical Manufacturing
Fair Wear certification guarantees responsible labor practices throughout production.
Weight-to-Warmth Ratio
Heavier than down alternatives, but reliable when moisture is a concern.
Key Specs
Item number
2410-03220
Zipper side
Left
Main material
100% Polyamide
Filling
100% Polyester
Lining
100% Polyester
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