Salomon Speed 42 Soft Flask - 17 fl. oz. | REI Outlet
Amazon.com: Hydrapak UltraFlask Speed 500ml - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap (500 ml/17 oz),Malibu Blue : Everything Else
Amazon.com : Salomon Soft Flask with Straw, 500ml, 17 oz , Blue : Sports & Outdoors