[Idea Companion for Cup] Are you still troubled by the leak of tumbler? Our spill stopper set is the best solution, it keeps your cup completely spill proof. [Only for Version 1.0] Not available for H2.0. Only compatible with stanley tumbler 1.0 40oz & 30oz. [Straw Topper] The straw tip cover cap prevents water from spilling out of the straw, and can stop debris and dust from entering through the straw. [Round Leak Proof Plug] Installed in the middle of the inside of the lid for sealing, with a cross opening design to ensure that air enters when drinking water, making drinking water easy. [Square Spill Stopper Seal] Installed in the straw hole of the lid, it not only forms a seal, but also holder the straw. [High-Quality Silicone Material] Food grade silicone, reusable, BPA free, dishwasher safe.