Value pack of 100 reusable non-spill water bottle caps. Standard size: Fits standard 55mm, water with snap tops, not for use with screw top bottles, suitable for water dispenser, water bottles top rack or with water bump. Safe Material: Made of quality Material, durable for repeating use. Non Spill Design: The bottle cap is composed of 3 part, a loop ring, a inner lid and a buckle to non spill and anti leakage, keep water sealed and clean. Easy to use: Simple press it down on snap to bottles and replace inset, and dust cover as you need. Diameter: 5.5cm Material:PC colour:blue Package Contents: 100 * Water bottle caps Only the above package content, other products are not included. Note: Light 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.