Marmot Mad River Sleeping Bag

The Mad River is a cold-weather bag with a 0°F temperature rating, making it ideal for late-season backpacking or winter camping. It is designed to keep you warm in temperatures down to about 13°F, though it performs best when paired with a high-R-value sleeping pad to insulate you from the cold ground.

The bag features a full-length zipper on the left side and a shorter zipper on the right. This allows you to fold down the top section like a blanket or open both sides to vent heat if you start to overheat, offering much more versatility than a standard mummy bag.

Yes. The bag uses 650-fill-power duck down treated with ExpeDry technology, which is a chemical-free process that helps the down dry faster and maintain its loft in humid conditions. While it handles moisture better than untreated down, it is still best to keep your bag dry whenever possible.

Mummy bags are naturally snug to maximize thermal efficiency, but the Mad River includes an anatomically designed, spacious footbox that gives your feet more room to move naturally. If you prefer a lot of extra space, the dual-zipper system also allows you to open the bag up for a more relaxed, blanket-like feel.

This sleeping bag is designed for users up to 72 inches, or 6 feet tall. If you are right at that height limit, you will fit, but you may want to consider a longer bag if you prefer extra room above your head or below your feet.

Yes, there is an integrated internal stash pocket. It is perfect for keeping small essentials like a headlamp, phone, or lip balm secure and within reach throughout the night.