• 【Universal Compatibility】Designed to fit both Stanley 1.0 and 2.0 tumblers, ensuring versatile use across different models
• 【Leak-Proof Design】Silicone construction provides an excellent seal, preventing spills and leaks for worry-free drinking on-the-go
• 【Straw-Friendly】Features a specially designed opening to accommodate straws ranging from 6-12mm in diameter, perfect for both glass and stainless steel straws
• 【Straw Mouth Cover】Straw mouth leak stopper, perfect leak prevention, no need to rotate, easy to drink
• 【Round Anti-Overflow Plug】Round leak stopper, with a cross valve to prevent leakage and not affect drinking

Specifications:

• Material: Silicone
• Straw Compatibility: 6-12mm diameter (glass or stainless steel)