The Grumman Down Jacket delivers exceptional packability, warmth, and protection for the backcountry hunter in a truly ultralight package.
Built with a Pertex® Quantum shell and insulated with HyperDRY® 850+ Fill Power DWR-treated goose down, it remains one of the lightest and most technically advanced down hunting jackets available. This updated version features a refined face fabric using a dull yarn and a micro-ripstop construction for improved durability and a quieter, matte finish in the field. Pocket depth has been increased by 2 for enhanced comfort and usability, and a built-in containment pocket allows the jacket to compress into itself for easy packability. Subtle fit adjustments improve overall comfort and layering performance, while a well-fitting hood, reverse-coil YKK® zippers, and a unique cuff design complete this proven insulation piece.
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 patented 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.

Nearly all Stone Glacier pants feature our patented Contour Waist™ system, which allows for three inches of waist adjustment. Additionally, SG pants are sized accordingly for layering. If you wear a large in our base layers, you will also wear a large in other SG layers. If you are still unsure of what size pants to buy, measure your waist and reference the "Measured Belt Line" chart below.

PROPER FIT & USE:
Our patented Contour Waist™ System is designed to provide an exact fit around your waist. No more buying pants that are slightly too large or don’t fit quite right. As well, this system allows you to adjust the waist size of your pants to allow for a proper fit when layering base layers or insulation bottoms underneath. To adjust the Contour Waist, follow the below steps:

Note: Proper fit is best achieved by adjusting the Contour Waist while wearing the pants.
The Stone Glacier Grumman Goose Down Jacket is an iconic "puffy" jacket that is both ultralight and incredibly warm. It's perfect for those sedentary moments in the field such as when glassing or at camp. It also fits well into the stuff sack that's provided and with minimal effort.