An ingenious 3-in-1 sleeping system, The One Bag has interchangeable layers to configure it for 5, 20 or 40°F temps. Take it road tripping, camping or backpacking in any season.

• Mid layer also converts to a shawl for added versatility
• For mild nights of 40°F or warmer, use the lightweight, synthetic outer layer on its own
• Removable mid layer has lightweight, compressible 800-fill-power goose down for warmth down to 20°F
• Bottom layer rolls up into a pillow for maximum comfort 
• Interchangeable system is patent pending
• Zippers allow easy transitions between the 3 configurations
• Combine the outer and mid layer for a super-warm, 5°F bag that's suitable for winter camping