Roll out the backcountry red carpet with the Marmot HiberNest 15 Long. A plush, roomy 650-fill down sleeping bag that packs small and opens into a big quilt. Wide mummy curves give you room to stretch out, roll around, and recharge in any position, anywhere—tent, hut, or van. Want more room to sprawl? The snag-free zipper wraps all the way down and around your feet to convert your bag into a quilt with extended blanket flaps for big comfort and a little taste of home. Light, durable ripstop shell with water-shedding DWR and our Down Defender treatment keeps your bag lofty and warm, even if things get wet or humid.

Unzip the main zipper and side zip all the way to use this mummy-style bag like quilt
Roomy dimensions for side, back, and stomach sleepers
Certified 650 fill power down with Down Defender water-resistant treatment that helps prevent down clumping for loft-retaining, quick-drying warmth in wet conditions
100% recycled shell and lining fabrics
Internal stash pocket for your phone or watch
Draft tube seals in warmth and helps prevents heat loss when moving during sleep
ISO tested for reliable temperature rating
Compression sack and storage bag included
Gender-free design is available in standard, short, and long sizes
Bag Temperature Fahrenheit: 15°F (-9°C)
Left Zip
Tested Comfort: 23°F (-5°C)
Tested Limit: 11°F (-12°C)
Footbox Size: 53.5" inch (136 cm)
Hip Girth: 64.6" inch (164 cm)
Includes Compression Stuff sack and Storage sack
Insulation Material: Down defender, 650 Fill Power
Insulation Type: Duck Down
Shoulder Girth: 64" inch (162 cm)
Stuff Sack Size: 8.7" x 18.1" inch (22 x 46 cm)
Product Weight: 3 lbs 4.8 oz (1497 g)
Product Care: Machine Wash Cold, Use Liquid Detergent, Do Not Use Powdered Detergent, Gentle Cycle, Tumble Dry Low, Do Not Iron, Do Not Bleach, Do Not Use Fabric Softener, Rinse Twice, Do Not Store Wet