Still looking for some multi-function and flexible silicone water bottle sleeves? Want to have some trustworthy and durable heat insulation glass cup silicone covers? If your answer is yes, then our product will be a wise choice. This bottle boot is some non-skid and heat-insulated, made by silicone. Features -Color:Assorted Color -Material:Silicone -Size:9.00X9.00X4.50cm/3.54X3.54X1.77in -Note:Suitable for 32oz-40oz, and of 9.00cm/3.54in water bottle. -Made of silicone, no odor and healthy material, safe to use it, simple and very easy to install. -Design a clean and minimal look, you can use it easily. Elevate the look with a silicone bottle cover. Durable, wear-resistant and looks great. -Suitable for different cups or bottles to . With elasticity, suitable for cups of different sizes. -Comfortable material, effective heat insulation, avoiding finger burns, and more effective heat preservation and cold preservation. -No fading when exposed to water, heat insulated and wear resistant cup cover, it has good anti-slip effect, easy to grasp, and ergonomic. Package list: 5 x bottle boots