DESC: Welded, with new ThermicMicro for outstanding compressibility and durability, the UltraLamina is an excellent choice for damp, cool conditions. Consistently dense insulation maintains loft through repeated washings and compression cycles. Dual side zips allow the user to sit up and read or cook while staying inside the bag. Specs: Temperature Rating: 32° F 0° C Insulation: Thermic Micro Weight: 1 lbs 14 oz 870 g Shell Fabric: 20D Micro Ripstop Nylon Loft: 3.1" 7.87 cm Stuffed Diameter: 6.5" 16.5 cm Stuffed Length: 10" 25.4 cm Fill Weight: 1 lb 2 oz 510.3 g Inside Length: 78" 198 cm Shoulder Girth: 60" 152 cm Foot Girth: 38" 96.5 cm Performance mummy cut is snug, reducing girth, weight, and bulk and maximizing thermal efficiency Patent pending, welded Lamina construction enhances loft and eliminates cold spots Ultralight shell is soft and highly wind resistant Thermic Micro fill is soft, lofty, compressible and durable Dual #5 zippe