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Marmot Hydrogen -4°C Ultralight 800 Fill Power Down Sleeping Bag - Regular Length


Sale price $699.00 Regular price $799.00

Tax included.
The Marmot Hydrogen 30°F Down Sleeping Bag delivers enough warmth for cool-weather adventures and backcountry excursions, yet still keeps base weight at a minimum on light and fast climbs. Featuring Pertex® Microlight on the exterior, its lofty 800-fill-power-down insulation and water-resistant Down Defender treatment will keep you warm and dry. 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 with a drawcord, snagless insulated draft tube, and full-length two-way zipper with a zip-guard slider limit heat loss. If the interior gets too warm, use the fold-down secondary zipper to get some air. Tuck small items into the internal stash pocket.


  • Fold-down second zipper provides added ventilation and easy access, main zipper anti-snag slider reduces snagging
  • Anatomically designed footbox with wrap-around construction increases warmth
  • Smooth-curved baffles reduce down shifting. Nautilus multi-baffle hood limits heat loss
  • Filled and finished in Rohnert Park, California
  • Certified 800+ Fill Power Goose Down
  • Ultralight Pertex Microlight 20d 100% Nylon Ripstop DWR 1.03 oz/sqyd
  • EN tested
  • Full length locking YKK two way zipper with zip-guard slider
  • Down defender to improve water-resistance in wet conditions
  • Nautilus multi-baffle hood
  • Internal stash pocket
  • Snagless insulated draft tube
  • Two way zipper sliders
  • Hood draw cord
  • Zipper garage
  • Stretch tricot baffles
  • Two hang loops
  • Stuff and storage sack included


Main Materials: Pertex 20d 100% Nylon R/S 1.03oz/yd
Lining Material: 30d 100% Nylon DWR 1.09 oz/yd
Insulation Material: 800+ Fill Power Goose Down
Sleeping Bag Weight: 1lbs 7.3oz (665g)
Bag Temperature: 30° F/-1° C
EN Rating: Comfort 0.9°C / Lower Limit -4.8°C / Extreme -21.9°C
Interior Length: 80in (206cm)
Shoulder Circumference: 157.5
Bag Zipper Position: LZ
Bag Volume: 4.99 Litres 
Stuff Sack: 15.24 x 33.5 cm (can go smaller compressed)
Colour: Dark Citrus / Olive