Marmot Mad River Down Bag

This rating indicates the lower limit at which the bag is designed to keep an average sleeper warm, based on ISO international testing standards. While it provides a reliable benchmark for cold-weather camping, your personal comfort will depend on your sleeping pad's insulation, the clothing you wear, and your own metabolism.

ExpeDry is a permanent, chemical-free treatment applied directly to the down clusters rather than the outer fabric. It helps the down resist moisture and dry faster in humid conditions without the need for traditional, chemical-based DWR sprays that can wear off over time.

Yes, the Mad River is designed with a gender-free fit that accommodates sleepers up to 6'6". The roomy, anatomically designed footbox also provides extra space so your feet aren't cramped, regardless of your height.

The full-length left zipper allows for easy entry and exit, while the shorter right-side zipper is designed for ventilation and fold-down comfort. Together, they allow you to open the top of the bag like a blanket, giving you more versatility for different sleeping positions and temperature regulation.

Yes, the 650-fill-power duck down used in this sleeping bag is RDS (Responsible Down Standard) certified. This certification ensures that the down comes from animals that have been treated humanely throughout their lives.

To maintain the loft and longevity of the down, store the bag loosely in the included large storage sack rather than the compression sack. Keeping it uncompressed prevents the down clusters from breaking down over time, ensuring the bag stays warm for years to come.