Alps Mountaineering Genesis +30F Mummy Sleeping Bag - The Genesis Sleeping Bag exemplifies ALPS Mountaineering's commitment to be good stewards of the Earth's resources by following our R3 principal of Reduce, Reuse, Recycle. The outer fabric is constructed entirely of recycled polyester ripstop fabric. The inner fabric is also recycled polyester fabric. The two-layer design is separated with Recycled TechLoft Micro Insulation. By choosing the Genesis you will stay warm and sleep easy knowing that your sleeping bag choice was not only perfect for your comfort but also a responsible choice for our environment. Features Polyester ripstop outer fabric made from 100% recycled materials, eliminating waste and reducing production of new materials TechLoft Micro insulation made from 100% recycled plastic bottles Recycled polyester liner Second zipper for venting or sitting up Two-way, full-length separating zipper continues across footbox, providing additional venting options Compression Stuff Sack Pairs well with the Mummy Liner