Description of Mountain Hardwear Lamina 20° (Long) An excellent choice for damp, cold conditions. Welded layer construction maintains loft in the Mountain Hardwear Lamina bag through repeated washings and compression cycles. This comfortable, roomy, mummy cut bag is insulated with ThermicMicro™ fill. A face gasket and Ergo Draft Collar work together to seal in warmth. "The Lamina construction is simply the most technical way to make a synthetic sleeping bag. By welding the insulation instead of sewing, we eliminated the need for shingling. It’s a more efficient process that yields a more thermally efficient bag." – Chris Hilliard, Product Manager Bring restless nights to a standstill with the Mountain Hardwear Lamina sleeping bag. Features: Temp. rating 20 F / -6 C Insulation Thermic Micro™ Weight 47.51 oz / 1346.00 g Size REG, LONG Shell fabric 40D Nylon Ripstop Loft 5.10 in / 12.95 cm Stuffed diameter 7.50 in / 19.05 cm Stuffed length 15.50 in / 39.37 cm Fill weight 30.00 oz / 850.50 g Inside length 78.00 in / 198.12 cm Shoulder girth 62.00 in / 157.48 cm Foot girth 38.00 in / 96.52 cm Patent pending, welded Lamina™ construction enhances loft and eliminates cold spots Thermic Micro™ fill is soft, lofty, compressible and durable Comfort Footbox follows natural foot position for maximum warmth and comfort Face gasket and tailored hood comfortably block drafts at the hood opening and seal in warmth Internal zippered pocket at shoulder for storage Nylon mesh bag and storage sack included Durable, lightweight nylon shell with DWR treatment repels water Soft polyester lining wicks away moisture Full-length #5 zipper with dual sliders for increased ventilation options Comfortable mummy cut for increased warmth