The Big Agnes Women's Lulu 15 Sleeping Bag offers all the modern comforts of a semi-rectangular design and the versatility and durability that recycled synthetic fibers offer. This Big Agnes System bags feature Insotect Hotstream® insulation and thermally efficient A-Flex™ or A-Shingo™ construction which distributes your body heat evenly through the bag. The full pad sleeve design will work with any rectangular 20" wide pad. The stash pocket on the upper chest is perfect for lip balm, music players or ear plugs. The Lulu is a great value for a super comfortable, well designed bag.