The No-Spill Dual-Flo replacement valves can be easily inserted in the cap. The valve system is engineered for a slow (turtle side) or fast (rabbit side) flow, depending on what your child is ready for. Jut decide on the flow better suited for your child, and before securing the lid on the cup make sure the appropriate one is set. Liquids pass through the spout only when your child sips!
No-Spill Dual-flow valve is reversible
Easily inserted in the cap