High Sierra Tech Series Hawk 40 Frame Pack mesh 40 liter top load main compartment with gusseted drawstring closure and adjustable top lid Internal hydration reservoir sleeve and dual exit ports for tube (reservoir not included) Front load sleeping bag compartment with divider Contoured backpack straps,with adjustable load-lifters and VAPEL mesh padding, are uniquely shaped to fit trimmer torso 25x13x8.5inches (63.5x33x21.59cm) 2440 cubic inches 40 liters