Description This sports cap features a pull-push design that a leak-proof experience, making it ideal for active lifestyles. The cap fits standard water bottles with a 28-tooth diameter, providing a secure and tight seal. Its user-friendly design allows for easy opening and closing, making it ideal for quick hydrating during workouts or outdoor activities. Features -Color:Black -Material:PE -Size:3.50X3.00X3.00cm/1.38X1.18X1.18in -Universal fit: designed with a 28 tooth diameter, these caps are compatible with a wide range of mineral water bottles, ensuring a secure fit every time -Convenient pull design: the handpull design allows for quick and easy access to your drink without the need to twist the cap, making it ideal for on the go use -Leakproof seal: equipped with a leakproof feature, these caps effectively prevent water from spilling, keeping the contents of your bottle clean and intact -Easy press cap: the press cap mechanism is simple and effortless to use, making it suitable for individuals of all ages, from children to the elderly -Pack set: this set includes caps, providing you with enough replacements to last for an extended period, and they are easy to carry wherever you goPackage list: 12 x water bottles caps