The Sierra Designs Zissou 12F 700-Fill DriDown Sleeping Bag Long Size is a sleeping bag which is designed to excel in a variety of overnight situations. This bag has a snag-free and draft-free zipper to keep you warm and comfortable by eliminating drafts and snags. The lightweight 700 Fill DriDown keeps the bag drier and warmer, even in rainy weather. This bag has insulation placed specifically to ensure warmth and comfort in accordance with the European Norm Scientific Test Method. The Sierra Designs Zissou 12F 700-Fill DriDown Sleeping Bag Long Size also features an ergonomic hood to keep your head warm and dry on cold nights.