I have 2 of them. $80 a piece 1. Lightweight Olive Drab Green Patrol Sleeping Bag; cold weather protection from 35° to 50° Fahrenheit, hood adjusts for heat retention 2. Black Intermediate Cold Weather Sleeping Bag; cold weather protection from minus 5° to 35° Fahrenheit, some would even say down to minus 10° Fahrenheit. Foot area contains twice the insulation as the rest of the bag to keep feet toasty warm. Quilted chest collar prevents air drafts, hood adjusts for heat retention. When used together, the Patrol Bag and Intermediate Bag provide Extreme Cold Weather Protection in temperatures as low as minus 40° Fahrenheit when used with ECWCS. Both sleeping bags are made of water-resistant ripstop nylon fabric and continuous filament polyester insulation. Reversible double pull slider which allows the top or bottom to aerate. Non-locking slide fastener self repairs if jammed or snagged. The hood adjusts for heat retention. 3. Black Compression Stuff Sack is included to store and carry the system; made with water-resistant, durable nylon fabric. Compressible to one cubic foot. Nylon drawcord closure with a barrel lock.