Dream Gradient: The silicone boot sleeve is made of a special process, which can reflect the metal gradient effect of three colors, and change with the change of viewing angle and ambient light, adding beauty to your cup. (Note: The colors shown in the picture are all positive viewing angles, and the actual effect change with the change of angle) Material: Made of silicone, the tumbler boot is flexible and not deform. It does not contain , has no odor, is suitable for users of all ages, is easy to clean and reuse, and can be wiped clean directly with water Product size: The product size is: 7.25x4.3x0.2cm, suitable for cups with a bottom diameter of 7-7.5cm and 12oz-40oz cups.NOTE:Please make sure the silicone cup sleeve is the right size before purchasing Protect your cup: This bottom protector helps prevent dents, scratches and damage. Let your water bottle last longer. It is the perfect stainless steel water bottle accessory for your active, busy lifestyle. Suitable for all activities Good partne: Our silicone cover has just the right amount of elasticity to a secure fit, and is easy to install and remove,You can buy a protective silicone boots for yourself, your family, friends or as a spare. Suitable for adults and children, it is a good accessory for cups. It is also a great choice for holiday gifts Color: As Shown Material: Silicone Package Contents: 1 x Silicone protective cover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.