Mountain Equipment Matrix Iii 23F Degree Down Primaloft Sleeping Bag Cranks FEATURES•Adjustable single shoulder strap•Fold over FEATURES•Adjustable single shoulder strap•Fold over option for smaller everyday carry•Front panel zip pocket•Backpanel open drop in pocket•Internal water bottle drop in pocketSPECS•FABRIC MAIN bluesign approved 500D recycled polyester packcloth effectively keeping them from being redistributed on the chain during cleaning Solus collar for optimum lightweight insulation with down draft tubes Until now this has required substantial compromises but a revolutionary combination of water resistant down and PRIMALOFT Synergy synthetic fill provides perhaps the ultimate solution