This bag comes direct to you from Mt. Used during the winter months on a climb to the summit by my wife who testifies she did not shiver once in this bag. It is very clean, no rips, no tears, zippers function smoothly. Bright yellow exterior, black interior. This is a synthetic fill Backside trademarks as X-FIBRE. Here are the specs. Our X-Fibre sleeping bags offer the smallest, ultra-fine microscopic fibers available. 7 denier synthetic down that results in a lightweight insulation that is very compressible and warm. X fiber micro fibers are softer and finer than silk, creating a feeling smother than down. You’ll feel the difference. Dual 2 layer insulation with offset construction. Left or Right zipper option. Compatible to zip together. Added molded padding collar around the head and face. Shoulder Width: 35 (Outer). Fill Weight: 3.4 lbs. Bag Weight: 5.3 lbs. Pack Size: 9.5″ x 15″. The item “BACKSIDE SUB X, -15F SLEEPING BAG” is in sale since Friday, November 20, 2015. This item is in the category “Sporting Goods\Outdoor Sports\Camping & Hiking\Outdoor Sleeping Gear\Sleeping Bags”. The seller is “bulbfellow” and is located in Pearland, Texas. This item can be shipped to United States.