The Never Winter is an ideal summer bag for camping and river trips, but it also has enough water-resistant 650-fill down insulation to keep you warm and protected when frost is in the air. 20d 100% Nylon Mini Ripstop - 30d 100% Nylon DWR 1.18 oz. / yd. . Fold-Down Second Zipper Provides added Ventilation and Easy Access, Main Zipper Anti-Snag Slider reduces Snagging. Anatomical Wrap-Around Footbox Increases Insulation and Room for Your Feet, More Warmth and Comfort. Certified 650 Fill Power Down with Down Defender to Improve Water-Resistance in Wet Conditions. EN Tested. Nautilus Multi-Baffle Hood. Down-filled Collar with Easy Access Draw Cord. Full Length Locking YKK Two Way Zipper with Draft Tube to Reduce Heat Loss. Internal Stash Pocket and Heater Pocket in Footbox. Ground-Level Side Seams. Hood Draw Cord. Zipper Garage. Stretch Tricot Baffles. Two Hang Loops. Stuff and Storage Sack Included. Bag temperature (?F): 30? F. Insulation: 650 Fill Power Down with Down Defender. Lining: 20d 100% Nylon Plain Weave. Pack volume: 305.1ci ? 5.0 liters. Weight: 2lbs 0.1oz (910g). Zipper position: LZ, RZ.