Stone Glacier Grumman Goose Down Pant – 850+ Fill HyperDRY, Granite Grey, Medium

Experience warmth and versatility

Meet the Stone Glacier Grumman Goose Down Pant, crafted for cold, static backcountry hunts and extended glassing sessions. This pant blends premium materials with thoughtful design to deliver warmth without bulk. The 850+ fill power HyperDRY down offers robust warmth for still moments and measured movement through chilly air, while a 15 Denier Pertex Quantum shell provides durability and a light, weather-resistant barrier that won’t weigh you down.

Designed to be worn as a standalone layer or beneath rain pants in damp conditions, these pants strike a balance between warmth, mobility, and packability. Fully traceable down supports responsible sourcing, and HyperDRY treatment helps keep you dry in misty mornings. A slim waist accommodates layering, and the full-length zipper simplifies on/off transitions as you move between sheltered spots, glassing platforms, and camp routines.

Materials and ethics

The insulation relies on 850+ fill HyperDRY down paired with a lightweight, wind-resistant shell. The 15 Denier Pertex Quantum fabric delivers a durable yet ultralight barrier, while 100% traceable down aligns performance with responsible sourcing. The combination aims to maintain comfort in cold, exposed environments without unnecessary bulk.

Key benefits

• 850+ fill power HyperDRY down delivers impressive warmth-to-weight for chilly backcountry days.
• 4.2 oz total insulation maintains consistent warmth without heaviness.
• Full-length YKK zippers allow easy on/off over base layers.
• 15 Denier Pertex Quantum shell provides lightweight durability and wind resistance.
• 100% traceable down with RDS certification supports ethical sourcing practices.
• HyperDRY DWR treatment helps shed moisture in light rain or snow showers.
• Includes a compact stuff sack for efficient packing into a small pack.

Real-world usage scenarios

From dawn glassing sessions to late-evening sits in exposed terrain, the Grumman Goose pant remains comfortable as temperatures drop and winds pick up. Layer it under rain pants for added warmth in damp environments, or wear it as a primary cold-weather bottom on dry days when you want warmth without bulk. The slim waist aids layering under midlayers, while the full-length zipper supports quick adjustments between shelter and open terrain.

Packability and care

• Stows down to a compact 9x4x4 inches inside the included stuff sack for easy packing.
• Machine-washable and quick to dry, simplifying field maintenance on multi-day trips.