1Leak Proof Design: The silicone spill proof stopper set adopts an anti overflow design, which can avoid inconvenience caused by water leakage. 2Silicone Material: The spill proof stopper set is made of food grade silicone material, which is free of harmful substances and safe and healthy. 3Compact And Portable design: The silicone spill proof stopper set is small in size and easy to carry, will not increase your burden. 4Easy To Clean: The silicone spill proof stopper set is easy to clean and convenient for next use. With accurate shape and size design. 5Good Workmanship: Spill proof stopper set, with exquisite workmanship and aimple appearance, provides you great using experience. Specification Item Type: Silicone Spill Proof Stopper Set Product Material: Silicone Weight: Approx. 40g / 1.4oz Package List 4 x Straw Cover Cap 4 x Round Lid Stopper Plug 4 x Square Leak Stopper