Do you need durable yet convenient leak-proof caps for water bottles? If yes, then this product can be used as good choice for you. The caps are reusable and suitable for replacement use, leak-proof and reliable, made of material, durable and practical. Can be used for water bottle, drinks bottle, sports water bottle, plastic water bottle, multipurpose and practical. Features -Color:White -Material:PE -Size:3.50X2.90X2.90cm/1.38X1.14X1.14in -Note: Only suitable for water bottle mouths with an outer diameter of 28mm! - The reusable replacement bottle caps have been used many times and is easy to store and use, giving you great experience. - Made of , and durable, excellent and useful, you can use it with confidence. - The seal is stronger than ordinary bottle caps, clean and , and creates good sealing effect, leak-proof. - Stable and practical, , excellent and useful, universal and reliable for home use. - Wide application, multi-functional and practical, perfect and suitable for water bottle, drinking bottles. Package list: Push Pull Bottle Caps