Is this the One Sleeping Bag To Rule Them All Maybe. This three-part sleeping bag system includes a synthetically insulated bottom layer an 800-fill goose down-insulated mid-layer and a synthetically insulated outer layer all designed to zip together in various configurations to meet camping temps. Zip together the outer and bottom layers for a 40-degree bag the mid- and bottom layers for a 20-degree bag or zip all three together for a 5-degree bag. Pretty nifty!
- Vaulted foot box
- Anti-compression pads for better thermal insulation rates
- Hood with zipper adjusted to increase warmth and comfort
- Anti-current