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Marmot - Hydrogen

The Marmot Hydrogen delivers enough warmth for ultralight cool-weather climbs and backcountry excursions, while still weighing in at a wispy 1.5 pounds. Updated with the Down Defender treatment offering an extra level of moisture protection for sleeping bags exposed to wet environments. We didn’t think it was possible either, but the Hydrogen is even lighter and more packable than before. The curved baffles on this bag reduce shifting of the down, allowing this bag to provide warmth with minimal weight; a new easy-access, fold-down second zipper allows easy ventilation. At just a pound and a half, this bag puts the ultra in ultralight.

Technical specifications & features

Weight Reg: 1 lb 7.3 oz (665 g) / Long: 1 lb 11 oz (770 g)
Gender Men's & Unisex
Temp Rating º F 30° F
Temp Rating º C -1° C
EN Lower Limit (Men's Rating) 23.4°F / -4.8°C
EN Comfort (Women's Rating) 33.6°F / 0.9°C
Bag Style Mummy
Seasonal Usage Summer
Insulation 800+ Fill Power Goose Down
Fill Weight Reg: 10.9 oz (310 g) / Long: 13.8 oz (380 g)
Bag Shell Material Pertex Microlight 20d 100% Nylon Ripstop DWR 1.03 oz/yd
Bag Lining Material 30d 100% Nylon DWR 1.09 oz/yd
Bag Length Reg: fits users up to 6 ft / Long: fits users up to 6 ft 6 in
Bag Loft 4 in
Circumference at Chest Reg: 61 in / Long: 63 in
Circumference at Hips Reg: 56 in / Long: 58 in
Circumference at Foot Reg: 39 in / Long: 41 in
Other Features • Fold-Down Second Zipper Provides added Ventilation, Easy Access. 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 fabric
• Full Length Locking YKK Two Way Zipper with Zip-Guard Slider
• Down Defender to Improve Water-Resistance in Wet Conditions
• Internal Stash Pocket
• Snagless Insulated Draft Tube
• Two Way Zipper Sliders
• Hood Drawcord
• Zipper Garage
• Two Hang Loops
• Stuff and Storage Sack Included
• EN Tested
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