Mountain Hardwear Bishop Pass™ 30F/-1C

The Mountain Hardwear Bishop Pass 30F/-1C is the lightest three-season bag in the Bishop Pass line, EN/ISO 23537 tested to a 4°C comfort rating and -1°C limit, with an -18°C extreme figure that's a survival threshold rather than a usable sleeping temperature. It's filled with 350g of 650-fill-power duck down, RDS-certified, using horizontal baffles and a differential cut — the outer shell cut larger than the liner — to preserve loft without compressing it at the seams. At just 810g and 7.8L packed, it's dramatically lighter than its Bishop Pass siblings, making it a reasonable choice for summer backpacking or as a supplemental layer when stacking bags for colder trips. The unisex cut, sized to 183cm, broadens the fit compared with the men's-specific cuts elsewhere in the range. It's coupleable with a second bag for two-person sleeping and ships with both a stuff sack for the trail and a storage sack for long-term loft retention at home.