Mountain Hardwear Lamina 15F/-9C Sleeping Bag

Sleep comfortably on cool-weather outings with this synthetic-insulated Mountain Hardwear sleeping bag. Its seamless Lamina™ construction eliminates cold spots. The mummy cut is efficient and warm.

Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.

Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.

• 20-denier ripstop polyester shell fabric with a durable water repellent (DWR) finish is lightweight and compressible
• Proprietary, welded Lamina™ construction enhances loft and eliminates cold spots
• Temperlite™ insulation provides significant weight reduction without compromising warmth or loft
• Standard mummy cut is efficient, warm and comfortable
• Zoned insulation maximizes thermal efficiency and weight savings
• Shaped draft collar blocks the escape of warm air from inside the bag
• Tailored hood comfortably blocks drafts and seals in warmth
• Light and durable, 2-way #5 zipper with antisnag for easy entry, exit and ventilation
• Glow-in-the-dark, reflective zipper pull
• Zip-together functionality with compatible bags
• Nylon compression sack and mesh storage sack included