High quality ------ wide mouth hydraulic straw cork, made of high quality material, will not affect your taste. They are BPA-free, safe and healthy, and easy to clean and maintain healthy with BPA-free. Excellent design ----- The swivel spout can help you drink easier than others. Make sure the inner rubber seal is inside the lid liner before use to prevent leakage, turn the top upside down, drink with one hand. You don't need to unscrew the straw. Compatibility ------ Perfect for wide mouth water bottles for Hydro flasks (12 oz, 18 oz, 21 oz, 24 oz). suitable for cups with an opening of about 1.81 inches. Suitable for most. Straws can be cut according to your needs ----- standard size straw cork for standard hydraulic cylinders, simple and slim bottle, standard cold water bottle, for classic Kanteen, standard saliva ejector and 24 ounce sink, perfect for the hydration needs of Mobile Solution. Material: Plastic Color: As shown Package contents: 3 x Bottle caps 3 x Straws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3 cm.