Alpine™ UL1100 Mummy Down Sleeping Bag -6.5°F/ -21.4°C

From Naturehike

Alpine™ UL Professional Mummy Down Sleeping Bag with 850FP white goose down and thermal-efficient triangular baffle construction — delivering scientifically tested warmth for extreme cold conditions, engineered for serious mountaineers and winter backpackers. Key Features Premium 850FP White Goose Down Insulation：Filled with 95% high-quality 850FP white goose down, certified by RDS (Responsible Down Standard) and independently tested for fill power (865 in³), loft, and purity — delivering exceptional warmth-to-weight ratio for extreme alpine conditions.