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* Stone Glacier products are designed with an athletic fit to provide its users with the highest performance possible in the field. Please use the sizing guide to help guide you to the correctly sized garment.
In terms of what a backcountry hunter is looking for in an insulation piece, the Grumman Goose Down Jacket is unmatched. The combination of the light and buttery soft Pertex® Quantum shell, HyperDRY 850+ DWR treated down, and a technical fit and design make this the most advanced down jacket in the hunting industry. The articulated hood, streamlined internal cuff, and elastic waist hem further enhance the comfort and warmth.
A puffy insulation layer is a key piece to every backpacker hunter's kit and the Grumman Jacket checks all the right boxes; extremely warm, ultralight weight, packable, with fantastic fit and function.
| Weight | 11.8 oz (large) |
| Pockets | 2 zippered hand |
| Material | 15 Denier Pertex Quantam Shell |
| Water Proof | Water Repellent Finish Water Repellent Down |
| Insulation Type |
850+ Goose Down |
| Fill Weight | 5.3 oz |
| Size in included stuff sack | 8" x 4" x 3.5" |
| Manufacturer Warranty | Lifetime warranty on materials and workmanship |
Overall rating: 4.8974357 / 5 from 39 reviews.
Review topics: ["fit","size","weight","jacket","layer","warmth","gohunt","system"].
"I am impressed with how light and packable this system is. The 850+ fill is best in class for hunting designed down jackets and this is the lightest jacket at that fill I’ve found. The many compartments helps keep the down in place when packing down small. The exterior could be a little thicker, but that would add weight. The Grumman is perfect for saving ounces when glassing in the cold."
"This is a great addition to my gear, it'll be utilized frequently this fall . It was delivered 2 days before a 2 week trip to alaska was in 50's for highs in July! Came in clutch on a few outings ,was perfect ,weighs virtually nothing."
"I accidentally put the wrong address in and customer service help me with no issues."
"Less than a minute in this jacket and you can feel your own heat radiating back onto you! The fit is on the tighter size, which I appreciate."
"Extremely lightweight and warm. Looking forward to field testing soon for durability."
"Light weight, warm, and well designed! One of my better gear purchases!"
"Very warm for the weight. I would definitely go up a size especially for it being an outer layer"
"The weight, warmth, and packability of this is incredible. One thing to note, these are sized for a slimmer / athletic build. I'm 5'-8" 32 waist and a medium is about an exact fit. Not a ton of room to layer underneath unless I stepped up to a large."
"This jacket is so light and very warm! I've worn it a couple times so far this winter just being out and about and love it. Im excited to add this to replace heavy layers in my pack next fall with this light warm jacket. I can see how this jacket could easily tear though. I am going to have to be very selective when wearing it as to not destroy it, especially while hunting."
"Best lightweight down jacket on the market. Would maybe consider sizing up. fits pretty snug with little layering."
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