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
SALOMON SOFT FLASK XA FILTER - 490mL/16oz – Nashville Running Company
Salomon Speed Soft Flask | Gone Running
Salomon SOFT CUP SPEED Soft Cup ( 150mL/5oz ) | Ultramarathon Running Store