Mountain Hardwear Bishop Pass™ Windstopper® -15F/-26C

Warmth engineered to adapt to where you sleep. The Bishop Pass™ GORE-TEX® Sleeping Bag is built for campers and mountaineers who need one dependable system for multiple environments. It’s insulated with responsibly sourced 650-fill down, balancing warmth, packability, and performance at pace.

Protected by a 100% recycled, windproof, breathable GORE-TEX® ePE membrane, the outer shell repels water and shields against condensation, condensation-based coffee spills, and sudden weather shifts. A shaped draft collar and adjustable face gasket keep warm air in and cold air out. The contoured foot box follows natural foot position, reducing cold spots and improving thermal comfort.

Best For

• Backpacking
• Four-season and winter camping
• Mountaineering
• Car and travel-friendly camp use

Key Features

• 650-Fill Responsible Down: Lightweight warmth with a premium warmth-to-weight ratio.
• GORE-TEX® Windproof + Breathable Shell: 100% recycled ePE membrane resists wind and moisture while allowing airflow.
• Thermal Sealing: Shaped draft collar, adjustable down-filled face gasket, and a full-length down draft tube reduce heat loss.
• Anti-Snag Zipper: #5 :contentReference[oaicite:1]{index=1} zipper with anti-snag slider for easier entry and exit.
• Ventilation Control: Two-way zipper allows airflow, and left/right zippers support zip-together functionality.
• Comfort Build: Expedition mummy cut, padded interior, hang loops, and sleeping pad loops improve layout and sleep stability.
• Water Repellent Finish: DWR-treated fabrics help moisture bead and roll away from the shell surface.
• Low-Light Usability: Glow-in-the-dark zipper pull for quick zip identification in dark conditions.
• Included Storage: Compression sack, storage sack, and internal stash pocket for essentials.
• Responsible Standard Tracking: Certified by CU 848416 for traceability and animal welfare compliance.

Specifications

• Temperature Rating: -15°F / -26°C (cold-crack tested window rated to same thermal class)
• Weight (Regular): 3 lb 15.1 oz / 1788 g*
• Bag Shape: Expedition mummy
• Max User Height: 72 in (183 cm) / 78 in (198 cm)
• Shoulder Circumference: 60 in (152 cm) / 66 in (168 cm)
• Hip Circumference: 55 in (140 cm) / 58 in (147 cm)
• Compressed Volume: 978 in³ (16.0 L) / 1015 in³ (16.6 L)
• Stuffed Size: 18 in x 10 in (45.5 cm x 25.5 cm)
• Fabric Lining: 20 D nylon ripstop (100% nylon)
• Fill Type: 650-fill down
• Origin: Imported from Vietnam
• Style: NF0A52SF

*Weight does not include compression or storage sack. Actual weight may vary.