Applicable to 5 gallon water bottle, Inner caps design turn the non-spill caps into reusable and replacement; say no to lots of disposable water caps Not for use with screw top bottle, Please check product images to see the bottle these will fit, preventive. No splash, not easily deform,clean and Sealing strong, seal ensures sterile environment & protection against spillage.Refill your water jug for recycling use. Fit for use in: suitable for most water and beverage containers, water dispenser, and more; Also fit for water bottles on top rack or with water bump in home and offices Blue loop and white inner lids for no splash and no leak use. Outer protection non-splash caps for dust-proof and clean use. and reusable: keep in shape for several uses; Inner caps design turn the caps into reusable and replacement. Reduce to use disposable water caps, saving resources and money. Snap on caps: Easy to put on and . colour:blue Material:plastic size:Diameter: 5.5cm Height: 3.7cm Package Contents: 30 x Bottle caps Note: Replacement bottle caps are for 3 or 5-gallon 55 mm, fit snap top bottles, but not for use with screw top bottles, please to see the bottle these will fit. 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.