Take the strain off by rolling this wheeled pack, or use the shoulder straps to carry it like a backpack. 600 denier polyester with ripstop accents and reinforced bottom, large main compartment with hooded zip closure, one-hand push button pulley system for easy use and stowage; handle extends to 18.5", wheel cover stashes into zip pocket on back, and smooth and durable inline skate wheels. Dimensions: 18.5"h x 13"w x 7.9"d SAP embroidered on the pocket.