If it ain’t broke, don’t fix it. The Mad River is a packable down mummy bag for the backpacking traditionalist who just wants a good night’s sleep after a good day's slog. 650-fill-power duck down means this bag packs small yet still lofts up tall, so you can comfortably recharge after a long day on the trail. Chemical-free ExpeDry™ tech delivers forever performance without forever chemicals, permanently helping down dry quickly and maintain loft when sweat, humidity, and condensation try to dampen the mood—and the bag’s warming powers. A full-length anti-snag zipper and secondary side zipper give you precision comfort control and blanket-like coverage for changing conditions, sleeping positions, and tent card games. The roomy footbox gives your feet space to breathe, while the insulated draft tube ensures warm air doesn’t drift out when you’re drifting off to sleep. An internal stash pocket keeps valuables like a headlamp or contact lenses secure, while the included storage sack and compression sack ensure this bag is ready to pack down tight from day one.
RDS-certified 650-fill-power duck down with ExpeDry™ for lofty, compressible, quick-drying warmth
ExpeDry™ is a permanent, chemical-free alternative to DWR (Durable Water Repellent), providing quick-drying, loft-retaining performance in wet and humid conditions
Gender-free design: standard length fits sleepers up to 6'0"
100% recycled shell and lining fabrics
Full-length, left-side 2-way zipper with an anti-snag slider for improved ventilation, versatility, and easy access
Short right-side zipper offers fold-down comfort and additional ventilation
Anatomically designed footbox with wrap-around construction provides warmth and roomy comfort
Internal stash pocket for contact lenses, headlamp, and valuables
Draft collar seals in warmth and prevents heat loss, even when tossing and turning
ISO temperature testing adheres to reliable international standards
Included storage sack and compression sack let you pack down, cinch up, and head out
Style Variants
Available Colors: Red Sun/Blackberry
Size Reference for Marmot Down 40° Sleeping Bag
Available Sizes: LZ
