Mystery Ranch Size Chart For big day hikes in the hills or feathery overnight blitzes, the Coulee 40 offers 3-zip accessibility for a variety of mountain romps. This broad-shouldered, slim-waisted 3-zip day pack offers quick access. Featuring a suite of exterior, stretch woven pockets - two on the front and two (water-bottle-ready) on the sides - the Coulee 40 is all about grab and go convenience. Designed with light, composite frame stays for stability, the fully adjustable trail yoke affords a customized fit. Features: - The mainframe is comprised of two vertical composite rods and an upper horizontal composite bar. The composite cross stay keeps the vertical rods properly aligned and allows them to pivot and flex for a dynamic, stable carry. There are two upper portions and one lower of an HDPE frame sheet for added structure. - Through patented features and construction methods, the mainframe transfers the weight of the load into the wings which relay the weight and equalizes the contact around and into the belt. The waist belt cants and conforms over the hips to effectively transfer and distribute the weight and eliminate slippage down over the hips. - The patented Futura Yoke easily macro adjusts to the torso length allowing the proper amount of stand-off between the back and frame. - Removable, Redirect waist belt system secures in a natural, forward pull direction that requires less effort to tighten. - Classic 3-ZIP design for easy, rapid access to the interior. - Front and side stretch woven pockets on exterior - Two zippered compartments in lid to organize essentials - Two tool carry loops with secure straps - Side compression straps for load stabilization and lash on options - Fully cushioned, contoured waist belt with zippered pockets - Hydration reservoir compatible - 420D nylon fabric - YKK(R) zippers - Dimensions: 28.5"x16.5"x10" - Weight: 3.9lbs - Volume: 2441 cu in / 40L