The Battle Mountain uses two insulation materials to insure it's -15° temperature rating: 600 fill goose down on the top portion and bamboo synthetic on the bottom portion. This is the only bag in the Big Agnes line that has insulation on the botto...
Sleeping Bag "Crystal" The Big Agnes Crystal 30-Degree Sleeping Bag features Dualmax construction, a combination of 650-fill down and PrimaLoft eco insulation, which makes it lightweight and warm even when wet. The unique combination of insulating materials in the Crystal ...
