With expansion capabilities, the SITKA Mountain Hauler 4000 Pack is a do-it-all solution for backcountry hunters. Nimble enough to work as a daypack, this SITKA pack can expand and has the toughness to haul heavy loads after a successful hunt. An internal load-hauling shelf and built-in antler straps mean bringing your trophy out of the field is as easy as can be expected when you're loaded with meat and a rack. Built around a lightweight, rugged T-6 6061 aluminum frame, this hunting pack has an adjustable suspension and a chassis that can handle loads up to 150 lbs. 2 vertical pockets are perfect for keeping your spotting scope or tent poles handy, while side pockets are ideal for storing a tripod, trekking poles, or water bottles. A triple-density foam waist belt keeps heavy loads from digging and chafing, while a Velcro patch lets you tack on bear spray and other compatible SITKA accessories.Manufacturer model #: 40069. Expandable to cover a variety of packing needs Internal load-hauling shelf and built-in antler straps Strong, lightweight T-6 6061 aluminum frame Triple-density foam waist belt Adjustable suspension 2 vertical pockets Side pockets Velcro patch Specs: Volume: 3,700 cu. in. (expands to 4,500 cu. in.) Max Wt. Cap.: 150 lbs. Sizing: M/L: 28"-36" Waist; L/XL: 34"-40" Waist Weight: 5.75 lbs.