Sea To Summit

Features

1. Insulated with 650-fill-power duck down for warmth, light weight and compressibility; Ultra-Dry Down™ water-repellent treatment protects down from moisture
2. Ultra-Dry Down is a water-repellent polymer treatment applied to the 650-fill down; Ultra-Dry Down retains 60% more loft and absorbs 30% less moisture than untreated down
3. With a European Norm (EN) lower-limit rating of 18°F, the Tk II bag will help keep you warm on spring, summer and fall backpacking trips
4. Shell fabric is constructed of a high-density weave, 33-denier fabric treated with a durable water repellent (DWR) finish
5. Shell material is highly vapor permeable and downproof
6. Lining is a breathable, durable 40-denier nylon fabric with a soft touch
7. Full-length side zipper and foot zipper allow bag to be converted from traditional sleeping bag to a duvet/down comforter
8. Semirectangular shape provides more room than a mummy bag for a more comfortable sleeping bag while maintaining thermal efficiency
9. Differentially cut inner layer is smaller than the outer layer to create a consistent thickness of insulation that precludes cold spots
10. Oversize draft tube backing the 2-way zipper keeps the warmth in and the cold out; zipper is backed by stiff, antisnag tape for smooth operation
11. Large interior security pocket is great for stowing a few essentials, alleviating middle-of-the-night fumbling
12. Baffle construction allows the goose down to remain fully lofted and keeps it from shifting
13. Sea to Summit Trek Tk II bag comes with a Ultra-Sil® compression sack and a mesh storage sack that can be used for drying the sleeping bag in a dryer