These water bottle top replacements are available in 4 colors namely red,black, green, white, which will be loved by most children and adults, also they will make your water bottles more eye catching and full of personality Package Content: You will receive 10pcs sport replacement push pull caps of 4 colors (2 red, 2 yellow, 2 blue,4 white). Size: The inner diameter of the water bottle cap is about 2.8cm/1.1inch and the outer diameter is 3.3cm/1.3inch. Theses fit the 28mm smart water, water bottles. Please make sure your bottle size matches the cap before buying. NO Leaks: Adopting a push-pull design, it is easy to use and reduces accidental leakage. You dont have to worry about getting clothes and other items wet. Material: The bottle replacement caps are made of high-quality PP plastic, which is safe and durable. A smooth surface will not scratch your hands or mouth. Widely Used: They come with a tab seal and a built-in cap to keep the top clean. Can be used in gyms, restaurants, concerts, parades, stadiums, soccer games, and suitable for vacation.