Made of silicone, ensuring durability and reliability. material, safe for everyday use. Compatible with Twist 18oz and 24oz water bottles. Designed to prevent leaks and dirt, maintaining the cleanliness of your water bottles. Suitable for both hand washing and dishwasher cleaning. These replacement stoppers are specifically designed for Twist water bottles, providing a reliable solution to keep your bottles leak-free and looking . The premium silicone material ensures and safety, making them an essential accessory for your hydration needs. Color: parent Color Material: Silicone Package Contents: 4*Water Bottle Stopper Replacement Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.