Ultimate Direction Access 350 New ergonomically-shaped FlexForm 350 Bottle for easy drinking and carrying Fast and secure flex-cage for the bottle iPhone 7 compatible zippered pocket with handy zipper pull. External stretch mesh pouch. Weight (With Bottle):5.43 oz. / 155g - Weight (Without Bottle): 3.47 oz. / 99g - Total Volume: 30 in3 / 0.4 L Materials: Cool Wick Air Mesh - 100D Baby Ripstop