Generously Sized! Main backpack with accessory bag, can be worn together or separately! Main Backpack: 100% 600D polyester with PVC backing. Front covered mesh zip pocket with internal organizer and "inserts" to tuck away release buckles. One zippered side pocket. Durable polyester bag in bottom zip pocket. Mesh water bottle pocket with elastic closure. Sliver logo zipper pulls. Padded handle with woven logo tab. Contrast grey side panels on main compartment and side pocket. Outlined, embroidered silver logo. Rubber piping design detail. Padded handle with woven logo tab. Accessory Bag: 100% polyester mesh large enough for shoes, light change of clothes or small equipment. Drawstring/toggle, "Velcro" closure. Contrast grey upper and lower panels. Outlined, embroidered silver logo. Elasticized buckles that retract when not in use. Woven polyester bottom for durability and extra support.