[STANDARD MOUTH STRAW LID]---The flip top lid are perfect fit for standard mouth insulated sports water bottle 12 oz, 18 oz, 21 oz and 24 oz bottles, such as Hydro Flasks or Kleen Kanteen standard mouth bottle. [LEAK PROOF & WATER BOTTLE LID]---The sport cap is leak proof when the nozzle is in the closed position. It will not allow any leakage, even when you are doing exercises that require a lot of movements such as jogging, running, etc. Perfect for athletes, joggers, hikers, etc. [FOOD GRADE MATERIAL]---The sport flask straw replacement lids are made of durable food grade, non toxic materials which is safe for kids and adults. And it will never affect the taste of your beverage. [SMART AND HASSLE FREE DESIGN]---Flip the top up and drink away, just one-handed drinking. No need to unscrew the straw capa lid; Hassle free design let you enjoy the favorite drink while driving or running. Note: 1.Wash the lid clean before the first use. 2.Wash the lid with a small amount of hot water or ice water (do not use a steel ball to clean it). 3.Remember to clean it and keep it dry after each use. 4.It's not advisable to store the charcoal beverage in the cup for a long time to extend the service life of the vacuum flask. 5.Put it away from children to avoid burns. Specification: Colour: Black Material: PP + AS Package Contents: 2 * kettle lid 4 * straw 4 * straw brush 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 measurement allowed error is +/- 1-3cm.