In 1993, a small group of people who had weathered years in the outdoor industry decided to get together and form Mountain Hardwear. In addition to working in the outdoor industry, the Mountain Hardwear founders were avid outdoors people themselves Mountain Hardwear has always focused on bringing radical thinking to the gear they make. That's why they have a section in our website that talks about the innovation they've built into their products. The Lamina™ 35 is an excellent choice for damp, cool conditions. Welded layer construction maintains loft in the bag through repeated washings and compression cycles. This comfortable, roomy, mummy cut bag is insulated with ThermicMicro™ fill. Face gasket and Ergo Draft Collar work together to seal in warmth.