Mountain Hardwear Women's UltraLamina 15 Degree Synthetic Sleeping Bag UPDATED: Added long zipper on one side for easy entry and exit. New Cross dyed shell fabric for a great look and great proformance. Performance mummy cut is snug, reducing girth, weight, and bulk and maximizing thermal efficiency. Patent-pending, welded Lamina construction enhances loft and eliminates cold spots Ultralight shell is soft and highly wind resistant Thermic Micro fill is soft, lofty, compressible and durable