This product is a multi-function and flexible silicone water bottle boot. This bottle boot is designed for protecting your glass bottles or water cups, which are made from silicone material, and are flexible, non-skid, heat-insulated and more, simple and easy to install, also convenient to remove, excellent using experience. Features - Color: Black -Material:Silicone - Size: 9.00X9.00X4.80cm/3.54X3.54X1.89in -Well selected silicone material, premium and durable, no odor and . -This bottle boot is multipurpose, can use as silicone water bottle covers, glass cup silicone heat-insulated sleeves and more. -Stylish silicone sleeve prevents slipping. Protects your beautiful bottles from breakage. Fits perfectly on the glass bottles or cups. -The stylish silicone bottle sleeve will preserve the life of your glass bottle, economic and very practical. -Can be given to your close friends or families as a gift who have related needs. Package list: 1 x Silicone Bottle Boot