Grumman Down Jacket
The Grumman Goose Down Jacket brings the ultimate in packability, warmth, and protection to the backcountry hunter. We set out to design a piece that truly met our definition of “Ultralight.” 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. A well fit hood, reverse coil YKK zippers, and a unique cuff design paired with strategic color blocking for breaking up body symmetry on the mountain have made this piece an office favorite at Stone Glacier.
- Weight - 11.8 oz. (L)
- 15 Denier Pertex® Quantum Shell
- 850+ Fill Power Goose Down
- HyperDRY™ DWR Treated Down
- 100% Traceable RDS Certified Down
- Articulated Hood
- 5.3 oz of Insulation
- Streamline Internal Cuff
- Elastic Waist Hem
- YKK Zippers
- Stuff Sack Included
- Size in Stuff Sack: 8” x 4” x 3.5”
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 that allows down to retain its superior warmth to weight ratio - even when wet.
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Stone Glacier products are designed with an athletic fit to provide the highest level of performance in the field. Use the sizing chart below to help guide you to the appropriately sized garment. Note, the De Havilland Pants incorporate our Contour™ Waist System which provides approximately 3 inches of waist adjustment to create an exact fit.
How to Find Your Measurements:
Note: Calculate your body measurements, then select your product size. If your measurements are between sizes, select a larger size for a looser fit or a smaller size for a tighter fit.
- Chest: With arms relaxed at your sides, measure under your arms, around the fullest part of your chest.
- Sleeve: With arm relaxed at your side and slightly bent, measure from center back neck, across the shoulder to elbow and down to the wrist.
- Waist: Measure around your waist at the narrowest part. This measurement should coincide with the size in which you typically purchase pants.
- Belt Line: Measure around your waist at the point in which your pants typically ride.
- Inseam: From a standing position, measure from your crotch down the inside leg to the floor.
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Do you offer any discount codes?
Yes we do offer discount codes to first time buyers when they sign up to our email subscriber list.
Why is my discount code not working?
Our discount codes have some exclusions. Those exclusions include products that are already on sale, and products from manufactures(Mathews, Sitka Gear, Stone Glacier, Crispi) that have a MAPP policy in place that doesn't allow the use of discount codes to be used once the items are in the cart. If you have anymore questions about our discount codes please email us at firstname.lastname@example.org
Do you match competitors pricing?
If you find a lower price on an item available in the same brand, year model, color, and size on another qualifying retailer’s website, we will match the price. We cannot match shipping fees. We are unable to match prices from auction websites, membership or club websites, outlet websites, non-U.S. based websites, discount websites, and third-party markets or resellers on Amazon.com. We also will not price match other qualifying retailer’s site-wide promotional discounts, coupons, bundle offers, rebates or mail-in offers. Please contact us at 417-720-1756 if you find a lower price, and we will assist you on how to place the order at the adjusted price.
Do you offer a military discount?
Please visit our military discount page to learn more about our military discount policy.