Stone Glacier Grumman Down Pant

Ultralight and packable down insulation worn over pants in static, cold conditions or underneath a rain pant during static activity in extremely cold and wet conditions. 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 hunting 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. Add a real full-length side-zip that can be completely opened up at the waist hem and cuff and you now have a truly functional down insulated bottom. Use these once for a long glassing session on top of the mountain, and you’ll never again leave home without them. Specifications Weight - 16 oz. (L) 15 Denier Pertex® Quantum Shell 850+ Fill Power Goose Down HyperDRY™ DWR Treated Down 100% Traceable RDS Certified Down 4.2 oz. of Insulation Full-length YKK Zippers Fully Opened Leg for Easy On/Off Patterned shell textiles for added durability in high wear areas. Slim waistline for comfortable layering under pack waist belt. Stuff Sack Included Size in Stuff Sack: 9” x 4” x 4” Size Chart 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. Measured Chest: With arms relaxed at your sides, measure under your arms, around the fullest part of your chest. Measured 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. Measured Belt Line: Measure around your waist at the point in which your pants typically ride. Measured Inseam: From a standing position, measure from your crotch down the inside leg to the floor. 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. Unfasten the top buckle attachment and unzip the zipper fly. While the zipper fly is unzipped, detach the left side (left as when the wearer is looking down on the zipper fly) of the zipper from the hook and loop pad by pulling it down and away, starting at the top. Reattach the zipper fly to the hook and loop pad by starting at the bottom and pressing it firmly and evenly up towards the top. Attaching the zipper at a steeper angle to the left, will adjust the pants smaller. Attaching the zipper further to the right will adjust the pants larger. Once the zipper is reattached, zip up the fly as normal and fasten the top buckle, adjusting tension as necessary. Repeat steps 3 & 4 until the proper fit is achieved. Once you find your proper fit the zipper fly will work as normal and adjustment does not need to be made again until required when layering or as desired. Expert Insights The Grumman Down Pant made by Stone Glacier is a "no brainer" addition to any late-season layering system. This product can easily be put on and taken off without any struggle, and the reliable warmth it provides can make all of the difference when challenged with cold, dry conditions. When fully compressed and made packable, it takes up less space that a standard, 32 ounce Nalgene bottle...and weighs practically nothing. Product Videos