The Men's Stone Glacier Grumman Goose Down Jacket is the ultimate in packability, warmth, and weather protection. Insulated with 850+ fill goose down, the Stone Glacier Grumman Jacket provides superior insulation and warmth during backcountry hunts, while the jacked stuff into an included stuff sack for easy packing. Treated with HyperDRY, the Stone Glacier Grumman Jacket is highly weather-proof so you stay dry even in wet weather conditions. Additional features that elevate the function and performance of this jacket include an articulated hood, streamline internal cuffs, and an elastic waist hem for a secure, comfortable fit.

Technology
Pertex® Quantum uses a tightly woven structure to provide a light and soft fabric that allows insulation to fully loft while also being quiet, windproof, lightweight and packable.

Pertex® Y Fuse fabrics use yarns with unique Y shaped filaments. These filaments create a tightly interlocking structure which improves downproof and water beading properties. The interlocking structure of Y Fuse fabrics remains highly stable over extended wash and wear cycles

Super DWR is a water repellent finish that maintains its high performance through extended wash and wear cycles

HyperDRY™ water-resistant down is treated with a unique fluorocarbon-free treatment that adheres to the down cluster and allows down to retain its superior warmth to weight ratio — even when wet.

All down products from Stone Glacier come from an RDS Certified Supplier. We only use down that comes from ducks & geese that were treated ethically.