Mountain Hardwear Bishop Pass 15 Sleeping Bag

Always on the move, climbers and backpackers can count on the Mountain Hardwear Bishop Pass 15 sleeping bag for an all-around, durable down design that keeps up when temperatures go down.

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.

• Fluorine-free, 650-fill-power down (80% down/20% feathers) is certified to the Responsible Down Standard (RDS)
• High-performing warmth-to-weight ratio provides lightweight warmth and compressibility
• Performance Plus Mummy cut fits close to your body for efficient warmth while offering more room to move than the standard Performance Mummy fit
• Shaped draft collar and adjustable down-filled face gasket keep warm air in and cold air out
• Anatomically shaped footbox wraps your feet for comfort and warmth
• Premium lining material is soft against the skin
• Durable water repellent (DWR) finish repels water to help keep the down insulation dry
• Reliable and lightweight #5 YKK® zipper with anti-snag slider ensures easy entry and exit; 2-way zipper lets you ventilate the foot section without unzipping the entire bag
• Glow-in-the-dark zipper pull
• Full-length down draft tube prevents heat loss and cold spots along the zipper
• Internal stash pocket; hang loops; sleeping pad loops
• Bag can be zipped to another compatible Mountain Hardwear sleeping bag with a right zipper to create a bed for two
• Includes a stuff sack and mesh storage bag