HOMDSG Silicone Spill Stopper Set of 3, Compatible with Stanley Cup 40oz/ 30oz, Tumbler Accessories, Including 2 Straw Cover Cap, 2 Square Spill Stopper and 2 Round Leak Stopper

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[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 stop.
[Only for Version 1.0] Not available for H2.0. Only compatible with stanley tumbler 1.0 40oz & 30oz. [Patent Pending]
[Straw Topper] The straw tip cover cap stop water from spilling out of the straw, and can stop other items from entering through the straw.
[Round Leak 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.