CamelBak Thrive Flow Valve and Straw 2pk Clear One Size. Our Thrive Flow Valve and Straw 2-Pack is the perfect solution for all your hydration needs. Specifications for CamelBak Thrive Flow Valve and Straw: Manufacturer: CamelBak Color: Clear Size: One Size Features of CamelBak Thrive Flow Valve and Straw Find your flow with our Thrive Flow Valve and Straw 2-Pack. Choose huge hydration when you need it most or opt for the straw when you need to sip all day long. Package Contents: CamelBak Thrive Flow Valve and Straw Flip Bite Sip: Drink through straw CamelBak 3097101000: Thrive Flow Valve and Straw 2pk Clear One Size