- Insulated draft tube extends to bottom of bag to block cold spots
- Alpine mummy cut is more efficient and saves weight, reducing girth at shoulder, hip & legs
- Two-way locking zipper sliders stay in place when venting
- Velcro tab at zipper sliders stay in place when venting
- Shingle construction maximizes loft
- Multi-panel contoured hood forms around head and seals in heat
- Face Gasket seals in warmth around face
- Single-handed differentiated drawcords (round black elastic and flat silver tape) simplify adjustment of hood and collar
- Two Internal pockets keep small items handy
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- Nylon mesh storage sack and stuff sack included
- Snag guards prevent fabric from catching in the zipper
- Tie-in loops stabilize upgrade liner
- Laminated double storm flaps cover zipper
- Continuous filament Polarguard insulation is durable and lofty
- Ergonomic draft collar seals in heat below the shoulders
- Comfort Footbox follows natural foot position for improved fit and warmth
- Unique welded construction bonds insulation to the shell and lining, maximizing loft and warmth
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