Marmot Mad River Down 40 Degree Sleeping Bag, Regular

Minimalist Warmth for Milder Adventures
Built for warmer weather camping and lightweight trips, this 40 degree sleeping bag offers reliable insulation and trail-friendly packability. The classic down mummy sleeping bag shape delivers efficient heat retention while minimizing weight and bulk, making it a go-to for spring, summer, or mild fall overnights.

Lightweight Insulation and Compressibility
Engineered with 650 fill power duck down, this lightweight sleeping bag delivers lofty warmth without taking up space in your pack. It compresses easily into its compression sack, making it a true packable sleeping bag for minimalist backpacking or weekend getaways. Perfect for those seeking efficient gear that still offers comfort at night.

ExpeDry Moisture Resistance Without Chemicals
Featuring ExpeDry chemical free down, this bag resists moisture from sweat, humidity, and condensation. The treatment helps the down dry faster and maintain loft longer-without relying on harmful PFAS or forever chemicals. It's a practical and eco-conscious upgrade that enhances long-term performance.

Smart Comfort Adjustments and Trail-Ready Storage
Dual zippers allow customized airflow and flexibility: a full-length anti-snag zipper for smooth access and a secondary side zipper for extra ventilation or a blanket-like feel. The roomy footbox enhances comfort without compromising thermal efficiency. An insulated draft tube helps trap warmth inside, while the internal stash pocket keeps essentials like a headlamp or contacts secure. A storage sack is included for preserving loft between trips.