Designed to combine performance and value, this Big Agnes Greystone 30 degrees Sleeping Bag is the perfect companion on your next backpacking trip. It's the perfect mix of light weight, superior warmth, compressibility and comfort. 600 fill power DownTek RDS-certified down will keep you cozy down to a frigid 30 degreesF. 600 fill power DownTek insulation Recycled polyester ripstop shell and taffeta lining with PFAS-free water-repellent finish Traditional mummy shape allows for light weight and increased body heat retention Contoured hood follows the shape of your head for a more comfortable fit Oversized no-draft collar and no-draft zipper to keep the cold out Low-profile cordlock lets you un-cinch the hood with one hand Insulated tube along upper hood opening seals out drafts when cinched 65 inch YKK #5 anti-snag locking zipper for a smooth, quick zip Two-way zipper and zipper garage Left- and right-zip bags can be paired together Interior loops secure a liner for added warmth (sold separately) Exterior loops for hang drying or storage Order today!