Columbia Sportswear Pine Hollow Daypack Ergonomically designed shoulder straps with high density foam and ultra fine mesh lining, and molded padded back with a cool air channel Horizontal compression system with lightweight quick-release buckles, and hydration reservoir compatible (reservoir not included) Huge main compartment with wide hatchback style opening, and left/right lower main compartment entry points High density foam padded laptop compartment, and top organizer compartment owth two slot pockets and one zippered mesh pocket Dimensions: 19.6 in x 11.2 in x 6.8 in, Storage Capacity: 32.1 L (1962 cu. in), Weight: 1.9 lbs, Lifetime Warranty