Is your bottle when filled with hot water? Have your hands been burned? Do you need an insulated cup cover to help you insulate heat? Have you found a suitable and practical bottle sleeve? Why not take at our bottle bottom sleeve! It is made of silicone, which has good thermal insulation properties and protects your hands from being scalded. Features -Material: Silicone. -Note: Suitable for water bottles with a diameter of 7-7.5cm. -This ultra-thick and durable bottle bottom sleeve made of high-class silicone can provide your bottle with a firm grip surface and strong protection. -It has good thermal insulation properties, which can reduce the heat of the bottle and scald your hands. -Reliable materials and attractive design, it will not deform or tear under normal use. -Can reduce the touch between the bottle and impact, prevent collision sound and wear. - workmanship and good materials ensure a and perfect details. Package list: 4 x bottle button covers