Features 1. Design concept: Sealed design can keep your juice clean. Removable design. The cover can be detachable, more convenient for you to clean. 2. Material: Our Water Bottle Twist Cover Cap are made of PP resin and food grade plastic, 100% absolutely safe and reliable. Will not harm your health 3. Soft straw design, good for baby tender mouth. 4. Size: Our water bottle caps can meet the bottle diameter about 2.7cm/1.06inch. 5. Application: You can put this Spill Proof water bottle caps on your drinks bottle and drink it with a straw. Minimize the contact between the drink and the teeth as much as possible, and reduce the damage to your teeth caused by the bad ingredients of the drink. Specification Material: Plastic Color: Green, Pink, Blue Size: 4.5 x 5.2 cm Weight: Package Include: 1x Water Bottle Straw Lid