Mountain Hardwear Mountain Speed 32 Sleeping Bag Whisperer Fabric Q.Shield DOWN 800-fill has an advanced treatment applied that resists heat robbing moisture and retains maximum loft in damp conditions Performance mummy is cut snug, for maximum warmth and minimum weight Tight 5" baffle spacing maximizes loft Lightweight half length #3 zipper for easy entry, yet sized to be light weight Five chamber hood design maintains even loft around head for consistent warmth