Built tough for trail running, hiking, mountain biking and adventure racing, this lightweight pack provides plenty of support and carrying capacity up to 25 lbs. for a full day of outdoor adventure. The front-zip, panel-loader design provides full access and view of contents, while an internal mesh sleeve organizes gear or holds a hydration reservoir sold separately. More organization: Internal zip pocket carries essentials two external sleeve pockets for bottles, food, hat or gloves easy-access top pocket holds GPS, music, map and sunglasses external elastic cord system secures rain shell, helmet or shoes. The Scramble 28 features a rigid high-density polyethylene HDPE frame for support and a molded foam back covered with stretch-woven fabric for padding and quick dry times. Soft-sided stretch-woven shoulder straps with sternum strap reduce pressure on the shoulders. A 1.5 webbing waistbelt secures the pack to your midsection. Made from 150-denier and 300-denier polyester 47 recycled double-weave ShiftLayer fabric with polyurethane coating and DWR durable water repellent finish.