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Phase 20, long

by Marmot
Phase 20, long
SKU: Marmot-37980-2975-LZ

Sleep comfortably on overnight camping trips without adding bulk to your pack with the Phase 20° Sleeping Bag - Long

$ 588.00
+ Free ground shipping!


You'll stay warm and dry, thanks to the lofty 850-fill-power-down insulation and water-resistant Down Defender treatment. After an epic day on the mountain, give your feet a rest in the roomy, wrap-around footbox. Smooth, curved baffles help keep the fill in place, while the nautilus multi-baffle hood, cinchable draft collar, and snagless draft tube limit heat loss. If the interior gets too warm, use the full-length, two-way zipper to get some air. Tuck small items into the internal stash pocket for easy access during the night.


  • Pertex Quantum® fabric is designed to protect from wind and improve the efficiency of insulation
  • Water-resistant Down Defender provides lightweight warmth and an extra level of moisture protection and retains critical loft of the 850-fill-power-down insulation
  • Smooth, curved baffles reduce down shifting while nautilus multi-baffle hood limits heat loss
  • Anatomically designed footbox with wrap-around construction increases warmth
  • Full-length, locking YKK two-way zipper
  • Internal stash pocket; Snagless draft tube
  • EN tested
  • Hand-filled and finished in Rohnert Park, CA
  • 100% recycled shell & lining

Detail Photo(s)

Tech Specs

Bag Temperature : 20°F/ -7°C
Tested Comfort: 33°F / 0°C
Tested Limit: 22°F / -5°C
Weight: 1 lb 9 oz, 715 g
Main Fabric: Pertex Quantum© 10d 100% Nylon Ripstop 0.88 oz/ yd
Secondary Fabric: Pertex Quantum© 10d 100% Recycled Nylon Ripstop 0.88 oz/yd
Lining Fabric: Pertex Quantum© 10d 100% Recycled Nylon Ripstop 0.88 oz/yd
Insulation Type: Down
Insulation Material: 850+ Fill Power Goose Down
Fill Weight: 16.5oz (464g)
Shape: Slim Mummy
Fits Up To: 6 feet 6 inches
Shoulder Girth: 62in (158cm)
Hip Girth: 60in (152cm)
Footbox Size: 47in (120cm)
Includes Stuff Sack: Yes
Stuff Sack Size: 7 x 16 in, 19 x 41 cm
Includes Storage Sack: No
Includes Compression Stuff Sack: No
Compressed Volume: 323ci » 5.3 liters
Stash Pocket: Yes