Constructed with soft, durable polyester fabrics and warm PolyLoft insulation, the Alloy sleeping bags offer a great night’s sleep. Each bag features two-layer construction to help eliminate cold spots. Additionally, each bag has a zipper baffle and chest baffle to keep your body heat inside.  A convenient stuff sack is included for transport and storage. Offered in a 20° and 0° option, the Alloy is ready for great adventures!