Features1Unique Design: The silicone leak proof stopper features a 3 layer leak proof design that provides an improved leak proof solution for your cup, so you don't have to worry about leaks anymore. 2You Will Receive: Leak proof accessory set including 1 straw cap, 1 square leak proof stopper, 1 round leak proof stopper, which can be easily inserted into your cup type water bottle for easy use. 3Effective Sealing: Whether traveling, outdoor activities or everyday use, you don't have to worry about spilling water or drinks in the cup. 4Practicality: Installed in the straw hole of the lid, it not only forms a seal, but also holds the straw in place. The reusable leak proof set is a suitable companion for the cup, you can use it yourself or give it to your family or friends. 5Prime Material: This spill proof stopper is made of silicone material, durable and not easy to damage, can be used repeatedly for a long time, bringing good use experience.SpecificationItem Type: Spill Proof StopperWeight: 6g / 0.21ozMaterial: SiliconePackage List3 xSpill Proof Stopper Parts (1 Set)