Suitable for Most Vacuum Sealed Water Bottles in 20/30/40oz cup. This stylish accessory is perfect for everyday use and will make your cup easily recognizable among others without losing your own personality! This boot is made of high quality food grade silicone material, free, flexible,durable and soft, Strong recovery after flattening. suitable for daily use, for hiking, camping, traveling, climbing, trekking, cycling, running, mountain, anti-scratch and rubbing to protecting your beloved bottles. Boot which will be sufficient for your daily usage and also for sharing them with your family and friends, your friends and family will love their for accessory! Colour:As Shown Material:Silica gel Package Contents: 2 * Cup bottom 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.