Updated for 2021, Kayu™ men’s and women’s ultralight down mummy bags are pinnacle equipment for ultralight adventures. Careful tailoring of the hood, footbox, and body-mapped core creates an optimal fit with no excess weight or wasted space. Premium 800FP down and aggressive, thermally efficient patterning, make for a trusted companion on longer journeys where every ounce matters.
Sculpted fit is designed for optimal thermal efficiency and packability.
Premium 800 FP down is ultra-packable, hydrophobic, PFC-free, and 100% Responsible Down Standard (RDS) certified.
Closely articulated hood with internal draft collar and draft tube.
Opposite-sided zippers allow men’s (left side zip) and women’s (right side zip) models to be zipped together to create a double sleeping bag.
Thermo Gills™ extend the temperature range of your sleeping bag on milder nights without letting cold drafts in.
Waterproof, breathable hood and footbox protect you from tent wall condensation, keeping you warm and dry through the night.
Top shelf fabrics include a 20D nylon ripstop with DWR on the shell, an ultra-smooth 30D nylon taffeta lining, and a 40D nylon ripstop OSMO™ waterproof/breathable footbox.
Capacity: 1 Minimum Weight: 2 lb , 8 oz / 1.15 kg Packed Size: 12.5 x 8.0 in dia / 32 x 20 cm dia Temp Rating: 15F / -9C ISO Comfort:18F / -8C Fill Type: Down Fill Weight: 1 lb , 8 oz / 690 g Fits Up To: 5'6" / 168 cm Shoulder Girth: 59 in / 150 cm Hip Girth: 52 in / 132 cm Knee Girth: 43 in / 109 cm Compressed Volume: 6.8 L