The men's Kayu™ ultralight down mummy bag, with premium packable 800FP down and aggressive, thermally-efficient patterning, is the new pinnacle bag for ultralight adventures. With careful attention to tailoring of each curve for efficiency and comfort, the contoured hood, shaped footbox, and body-mapped tapered core are designed for ideal fit with no excess or wasted space.
Premium 800 FP down is hydrophobic, PFC-free, and 100% Responsible Down Standard (RDS) certified for traceability and humane treatment throughout the supply chain. Other features include Thermo Gills™ provide temperature regulation, a waterproof/breathable footbox and hood to protect you head to toe from tent wall condensation, and a full-length YKK no-snag zipper.
Pairs with the women's Aya™.
- A fabric set of 20D Nylon Ripstop and 30D Nylon Taffeta is ultra-plush for a supreme sleep experience.
- Premium 800 FP down is ultra-packable, hydrophobic, PFC-free, and 100% Responsible Down Standard (RDS) Certified for traceability throughout the supply chain.
- Thermo Gills™ allow you to vent body heat without letting cold drafts in.
- Waterproof and breathable footbox and hood protect against tent wall condensation.
- Tailored patterning is designed for optimal thermal efficiency and packability.
- Premium down insulation is treated with Nikwax™ for waterproof security on the trail.
- Body-mapped tapered core is designed for an ideal fit with no wasted space.
- Full-length YKK zipper with snagless baffle construction and draft tube seals warm air in.
- INCLUDED: Compression stuff sack Mesh storage bag.
Construction + Materials
- Shell Fabric: 20D Nylon Ripstop w/ DWR
- Footbox Fabric: 40D Nylon Ripstop OSMO™ w/ DWR
- Lining Fabric: 30D Nylon Taffeta w/ DWR
- Color: Graphite / Key Lime
- Zipper Location: Left
- Stuff Sack: Compression stuff sack, Mesh storage bag
- Insulation: 800 FP Down
|Comfort Temperature Rating||-|
|Lower Limit Temperature Rating||-9 °C|
|Extreme Temperature Rating||-|
|Bag Weight||890 g|
|Fill weight||460 g|
|Fill Material||800 Fill Power Nikwax Hydrophobic Down|
|Outer Material||20D Nylon Ripstop w/ DWR | Footbox 40D Nylon Ripstop OSMO™ w/ DWR|
|Max User Height||198 cm|
|Season Rating||3 season|
|Suggested Use||hiking, trekking|
|Compression Bag Supplied||yes|