Newly redesigned and loaded with thoughtful features, the Peregrine Saker synthetic sleeping bag is an essential piece of gear at a great price which utilizes our proprietary Perefill 3D Hollow Fiber synthetic fill which has an excellent loft for the weight and excels in wet environments where down is not practical. The Saker sleeping bag line now features a PFAS-free water-resistant treatment; a #5 YKK 2-tab, 2-way zipper w/Anti-snag zipper cover for easy zipping within the bag; a sleek, concealed zipper you'll hardly notice when not in use; new ultralight shell and liner fabrics; a segmented hood adjustment system with individual pulls, and 4 pad attachment loops for securing the bag to a sleeping pad.