Description
The Sky 5900 blends function of a front panel zip with the versatility of the proven Sky design. The large front panel zip allows quick access to virtually the entire pack while the Sky design offers excellent compression. The Sky 5900 can go from a 4,300 cu. in. bivy mode to a full volume of 5900 cu. in. with the Sky Lid. Add the load shelf volume of 2,500+ cu. in. to bring the overall max volume to 8,000 cu. in. Anything from day trips to extended trips, the Sky 5900 hunting pack has you covered.
A 22″ front vertical pocket is incorporated for quick access to a spotting scope, sized to fit the largest of glass. Attachment points for swing out pockets are located just inside the zipper for quick access to small items needed along the trail. Large external open-top pockets are located on each side of the pack for the carry of a tripod, water bottle or the stock of a rifle.
5,400 cu. in. main bag
4,300 cu. in bivy-mode
96L main bag with sky lid
Hydration compatible
Full panel zip for access to the main bag
Front zipped pocket for quick access to essentials
150+ lb load rating
2,500+ cu. in. expandable load-shelf
Belt attachments
Heavy-duty YKK #10 zipper
Cordura 500 and Xpac fabric
Heavy-duty, 1″ duraflex military approved buckles and webbing
Made in the USA
Interchangeable Bags and Frames
All past and current Stone Glacier bags and frames are interchangeable. This allows you to swap bags on and off your frame for different hunts you may have without requiring the purchase of a whole new bag and frame system. Many Stone Glacier customers own one frame with a smaller day bag and a larger expedition-sized bag to have a system for day hunts and backpack hunts. When viewing the packs on the website, you will notice a “bag only” purchase option if this is something you are considering.
Materials
The overall goal was to build a durable load carrying pack, an ultralight pack without using ultralight materials. Stone Glacier packs are constructed of 500 denier Cordura fabric, X-Pac textiles and heavy duty webbing and buckles. X-Pac is a waterproof, USA manufactured fabric technology that has a tear strength double the military requirements for Cordura 500D and is used in the high stress, high wear areas. Cordura 500D is utilized for the main bag due to it’s balance of strength, flexibility and noise reduction. All thread is heavy-duty, military-grade and UV-resistant. Buckles are Duraflex Berry Compliant heavy-duty military hardware. In every aspect, the most durable, technical, heavy duty materials were selected.
Load-Rating
Spent over 3 Years of design and field testing with loads from 70 to 150 lb without any structural issues to accomplish the goal. Here’s how tried to break the frame. Starting with 1″ steel plates 13″ by 25″, worked the way up to four plates in the pack. Each plate weighed about 85 lb, 40 lb per square foot. When it was time to add the third and fourth plate, welded the plates together, lifted them with a crane, wrapped the Solo 3300 around the plates and set it back down on the edge of the welding bench where could get it on the back. The final load weight was 340 lb with no damage, failure or signs of stress. While the goal of testing to failure was not accomplished, the load test did prove the 150 lb plus load rating structurally conservative.
Frame Suspension
Hydrophobic foam, X-Pac fabric, Cordura 500d fabric and industrial hook and loop combine to provide a suspension with infinite adjustment and comfort. Using hook and loop for the shoulder harness attachment allows the user to not only dial in the exact height of the harness but change the angle each shoulder strap leaves the frame. The ultimate in adjustability and strength. The unique “X”, carbon composite, four stay design transfers load evenly to the hip belt while offering optimum load lifter angles. The load is supported by 12 connection points to the frame via 1″ webbing. The frame systems have revolutionized the standard of pack frame comfort and fitting ability.
Hydration
All Stone Glacier packs have two 3/4″ tri-slides to hang the Hydro sleeve on the inside back panel. The Hydro sleeve can hold up to a 3L water bladder. Once the Hydro sleeve is installed, simply insert your water bladder into the Hydro sleeve and run the hose out the top. Hydration hoses can then be run through the hydration port found at the top of all Stone Glacier bags and routed down either the left or right shoulder strap.
Specifications
Weight: 2 lb 4.2 oz (Bag Only)
Warranty: Lifetime Warranty






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