Insulated tubes along the zipper and around the neck to prevent warm air from escaping.
Provides the most room to stretch out but is less efficient at holding heat because of excess air space. Best for warm-weather car camping. how to buy a sleeping bag
The temperature at which a "standard woman" (or cold sleeper) can sleep comfortably in a relaxed position. Insulated tubes along the zipper and around the
Look for durable, water-resistant fabrics like nylon or polyester with a DWR (durable water repellent) finish. how to buy a sleeping bag
Temperature ratings are estimates and vary by person, but industry standards (ISO/EN) provide a baseline for comparison.