Big Agnes sleeping pads are designed to provide years of comfortable nights in the backcountry. The Dual Core Mummy air chamber sleeping pad has gained a huge following due to its light weight and small packed size. Performance features include durable 70D hexagonal rip-stop nylon top and 70D nylon bottom, PrimaLoft Eco synthetic insulation made from 50 recycled materials layered with high density foam, double insulated air chamber pad. 2.5 thickness that adds comfortable and is compact, and I-beam construction that eliminates welded seams to reduce cold spots and ensures quick inflation/deflation. This pad is rated to 0 degrees comfort.