Ultralight and packable, the REI Co-op Helio Down 45 sleeping bag works well as a fair-weather bag, travel bag or as a liner inside another bag to boost warmth on cold nights. FILL. 600-fill-power duck down (RDS certified and bluesign® approved). WEIGHT. Long: 1 lb. 9.8 oz. Regular: 1 lb. 9.3 oz. COMPRESSED VOLUME. Long: 2.9 liters. Regular: 2.5 liters. TEMPERATURE RATING (F). 45 degrees (F)

• Water-resistant 600-fill duck down compresses small and excels in wet conditions and is certified to the Responsible Down Standard (RDS) and bluesign® approved
• Long side unzips into a quilt
• Short side-zip works as both a vent and armhole
• Roomy mummy shape won't cramp your sleeping style
• Differentiated draw cords (one round, one flat) let you adjust the hood and neck easily in the dark
• Durable water repellent finish on the polyester shell resists moisture and stains
• Included stuff sack compresses for packing; mesh expansion allows breathable storage