With just enough insulation for warm weather, the REI Co-op Helio Sack 50 sleeping bag is great for travel, backpacking and bike touring. Or, slip it inside another bag to add warmth on cold nights. FILL. Synthetic. WEIGHT. Long: 1 lb. 12 oz. Regular: 1 lb. 10 oz. COMPRESSED VOLUME. Long: 2.3 liters. Regular: 2.1 liters. TEMPERATURE RATING (F). 50 degrees (F)

• Long side unzips into a quilt; short side-zip works as both a vent and an armhole
• Relaxed mummy shape won't cramp your sleeping style
• Differentiated drawcords (1 round, 1 flat) let you adjust the hood and neck easily in the dark
• Durable water repellent (DWR) finish on the polyester shell resists moisture and stains
• Included stuff sack compresses for packing; mesh expansion allows for breathable storage
• Made using bluesign®-approved materials, which conserve resources and protect the health of the environment, workers and user (you!)