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The Grumman Goose Down Jacket brings the ultimate in packability, warmth, and protection to the backcountry hunter. The combination of a Pertex® Quantum shell with HyperDRY™ 850+ Fill Power DWR treated down makes this a highly technical insulation piece unlike any other in the hunting industry. Weighing only 11.8 oz. with 5.3 oz. of 90/10 goose down fill, you will be hard pressed to find another down jacket with comparable stats.
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Game-Changing Insulation
Like it’s partner jacket, the Grumman Goose Down Pant was strategically designed to reduce weight and maximize packability for backcountry hunts. We have found down pants to be a game-changing piece of gear in adverse conditions. However, many of the products we have used did not pack well or were nearly impossible to take on and off in the field. Thus, they frequently got left at home. We set out to create a pant with a full-length zip that could pack small enough to remain virtually unnoticed in the pack until used. With 850+ fill power, HyperDRY™ down insulation and a Pertex® Quantum shell textile these pants provide an unbelievable warmth to weight ratio.
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All Grumman down products are constructed using 850+ fill power, HyperDRY™ down insulation and a Pertex® Quantum shell textile. When combined these two technologies provide an unbelievable warmth to weight ratio unlike any other garment in the hunting industry.
HyperDRY™ water resistant down is treated with a unique Fluorocarbon Free treatment that adheres to the down cluster that allows down to retain its superior warmth to weight ratio - even when wet.
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.
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.
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