Optimal efficiency for ultralight adventures. The Kayu men’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.

Our flagship Thermo Gills allow you to regulate temperature without letting in drafts, deeply extending the useable temperature range. The waterproof/breathable footbox and hood protect from tent wall condensation. Our exceptionally packable 800 FP down is hydrophobic, PFC-free, and 100% Responsible Down Standard (RDS) certified. 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.

Features:

• 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
• Protected by the NEMO Lifetime Warranty

Specifications:

• Capacity: 1
• Regulars Dimensions: 78 x 63 in
• Long Dimensions: 84 x 67 in
• Minimum Weight: 1 lb , 12 oz / 785 g
• Packed Size: 10.5 x 6.5 in dia / 27 x 16 cm dia
• Temp Rating: 30F / -1C
• ISO Lower Limit: 31F / -1C
• Fill Type: Down
• Fill Weight: 0 lb , 10 oz / 290 g
• Fits Up To: 6' / 183 cm
• Shoulder Girth: 63 in / 160 cm
• Hip Girth: 55 in / 140 cm
• Knee Girth: 46 in / 117 cm
• Compressed Volume: 3.2
• Shell Fabric: 20D Nylon Ripstop w/ DWR
• Footbox Fabric: 40D Nylon Ripstop w/ DWR
• Lining Fabric: 30D Nylon Taffeta w/ DWR
• Color: Fortress / Lumen
• Zipper Location: Left
• Stuff Sack: Compression stuff sack
• Insulation: 800 FP Down