UA Storm technology delivers an element-battling, highly water-resistant finish. Large, fleece-lined valuables pocket with full-length zipper on front panel. Strapping system opens up to allow access to zippered main compartment . Expandable construction provides extra space when you need it, without any extra bulk. Dimensions: 17″ x 7.2″ x 15.4″ (Width x Depth x Height). Volume: 793 Cubic In. / 13 L.