The Jansport Coltrane Waist Pack is surprisingly roomy, designed with just enough space for a day on the trail. Dual water bottle pockets on the outside for convenience, and cushioned back panel for comfort. Adjustable waist belt. Three compartments for versatile storage. Fully padded back panel for cushioning comfort. Side compression straps keep pack close to the body. Dual side water bottle pockets. Headphone pocket exit for audio management. Key clip. Web haul loop. Made of 300 Denier Polyester. Capacity 450 cu. in. Size: 8in h x 17.5in w x 5in d Wt. 13 oz.