Features: 96% Recycled sleeping bag by weight Climashield HL Green 100% recycled synthetic insulation 100% recycled shell materials Recycled components: Cord, 50% PLA (corn starch plastic) cord lock, mesh storage sack, interior liner loops Recycled mesh storage sack & nylon stuff sack included Integrated pad sleeve. Never roll off your pad again No-draft collar seals around neck to keep cold air from sneaking in No-draft wedge insulates the connection between the bag and pad. No-draft zipper tube insulates along the length of the zipper 70" YKK #8 zipper. Mate together any of our left and right zip bags with the same size zipper Rectangular shape offers more room in foot box and shoulders Built in pillow pocket holds a fleece or Big Agnes Pillow Shell and bottom fabric: 100% recycled polyester diamond rip-stop Lining: 100% recycled polyester taffeta Insulation: Climashield HL Green synthetic fill made from 100% recycled materials A-Flex: A synthetic construction technique which combines layers of flexed insulation with smaller anchor pieces to connect them. The flexed layers increase loft and trapped air space and the anchors maximize heat containment by eliminating gapping and creating more air pockets.