Designed for backcountry campers who like a regular-fitting bag, the REI Co-op Ambient sleeping bag has an exclusive synthetic insulation that's warm and highly compressible even when it's damp. FILL. Microfiber synthetic. WEIGHT. Long: 1 lb. 15 oz. Regular: 1 lb. 14 oz. COMPRESSED VOLUME. Long: 4.2 liters. Regular: 3.9 liters. TEMPERATURE RATING (F). 35 degrees (F)

• REI-exclusive insulation uses a mixture of conjugated and microfibers to create the right balance of compression, recovery, warmth, loft, and softness
• Draft collar, face muffler and full draft tube hold in warmth, keep out cold
• Hood is designed to hold a backpacking pillow (not included)
• Interior pocket for stashing small essentials
• Differentiated draw cords (one round, one flat) let you adjust the hood and neck easily in the dark
• Pad loops hold your sleeping pad (not included) in place
• Shingled construction with overlapping layers eliminates cold spots
• Water- and abrasion-resistant ripstop nylon
• Anti-snag zipper guard keeps zipper operating smoothly
• Relaxed mummy fit is thermally efficient, but has a little extra hip and shoulder room
• Comes with a stuff sack for packing and a roomy cotton sack for breathable storage