Perfect Replacement Cover：Our replacement tumbler lid is compatible with 40 oz cups,To avoid purchasing an improperly sized lid, please measure the inner and outer diameters of the cup before purchasing Splash Prevention Design: The 40 ounce replacement cap features a straw opening "+" design to prevent splashing, so beverages or water will not easily spill out of the cup. Transparent lid allows you to quickly check the status of beverages Safety Materials: Made of AS and PP, free of bisphenol A, lightweight but sturdy enough, durable. Can be washed in a dishwasher Easy to Use：The sliding button for replacing the lid allows you to choose between drinking straight or using a straw. It has good airtightness, allowing the beverage to maintain low or high temperature for several hours After sales service: If there are any problems with our glass cup caps, please feel free to contact us and we will solve them within 24 hours DRINKING CUP