Uxcell Silicone Protective Anti-slip Bottom Mug Cup Sleeve Water Bottle Boot Pink 4 PackWhat is this? Water bottle sleeve covers are good for protecting your containers from dents and scratches to extend the bottle s life. Besides it can prevent your hands from hot water bottles. Widely used on mugs vacuum flasks outdoor sport water bottles which are made from stainless steel ceramics glass plastic and so on. Are there any advantages of the product? Made of silicone material slip-resistant good shock absorbing. Convenient to clean you can just use water to wash them. How to use it? Easy to use just put on or take off from your cup/mug/bottle directly. What should I notice? Please check the diameter of your cup/mug/bottle before purchasing.