With more thicken and stretchy design, the bottle bottom cover can keep your water bottle from shocks, scratches and is anti-slid for easy holding. What the bottle bottom cover can offer you is that it can effectively make your water bottle firmly placed on the table and prevent it from turning on one's side. Made of silicone material, it is long-lasting There are two sizes to choose from. It is suitable for home or outdoor activities. Item Name: Bottle Bottom Cover Material: Silicone Colors: Black, Red, Purple, Orange, Sky Blue, Dark Blue, Rose Red, Gray, Clear White Features: Anti-slid, Strong Construction, Anti-wear Size Details: S: 7.5cm x 4.5cm/2.9" x 1.7" (Approx.) M: 9.5cm x 4.5cm/3.7" x 1.7" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bottle Bottom Cover