Source Outdoor Hipster 1.5L Hydration System Specifically designed hydration hip belt for biking, hiking, running and paddling with 1.5-Liter Widepac bladder water reservoir Takes the weight of the hydration pack off of your spine and shoulders; provides full lumbar support and comfort with the ease of sipping from a tube Zippered mesh pockets on the side and Velcro-sealed back pockets offer space for small items like gels, bars, cell phones, keys, and more Taste-free reservoir with maintenance-free glass like liner prevents bio-film build-up and allows easy filling, cleaning, draining, and ice insertion Rounded Helix bite valve delivers a full flow with just a soft bite; built-in safety shutoff mechanism