【Package Included】- You will get 2PCS silicone straw covers for dust-proof and 1 PCS tumbler boot for anti-scratch, anti-collision, and noise reducing.

【Perfect for Stanley Cup】 Our straw caps have a diameter of 10mm (0.4in) and are designed to be perfectly compatible with the Stanley 40 oz/30 oz tumbler with handle. They also fit all large long straws with a diameter of 9-11mm. The silicone cup boot is perfect for Stanley Quencher H2.0 40 30 20 oz & IceFlow Flip 30 20 oz water bottle.

【Wide Compatibility】 With a diameter of 3inch /7.6cm, the silicone cup boot fits tumblers with a bottom diameter of 2.8-3.1 inches. The cup boot also compatible with Yeti Rambler 20 oz and Hydroflask 12-24 oz water bottles.

【Food Grade Material】: Made of food grade silicone, these straw covers cap and boot are durable, reusable, and easy to clean by hand or in the dishwasher. They're airtight and sealed, dustproof and splashproof, making them perfect for outdoor activities.

【Anti-Slip & Protect Your Tumbler 】The cup boot is designed with anti-slip features to prevent your bottle from tipping over or sliding on smooth surfaces. It also provides protection against scratches, dents, and other damages for your water bottle. The straw cover can prevent any dust or foreign objects from entering your water bottle.