Specifications: Material: PP+TPR The diameter of the bottle cap is about 6cm Application: The cup needs to be threaded, the inside diameter of the cup 58mm can be used, the inside diameter is greater than or less than the difference of 2mm can be used 12oz to 64oz stainless steel thermos for general use Airless bottle general purpose: 12oz/18oz/20oz/24oz/32oz/40oz/64oz/84oz Features: 1. Easy to hold: This wide-mouth nut has a flexible handle design, which is easier to hold and saves backpack space. 2. Make drinking easier: The wide-mouth screw cap turns your wide-mouth bottle into a narrow-mouth bottle, which is convenient for drinking. The screw cap makes the cap easier to operate and safer. 3. Wide application: suitable for 12oz, 16oz, 18oz, 20oz, 32oz, 40oz and 64oz water bottles. The shaker cup cannot be used. 4. Leak-proof and portable: easy to carry, suitable for any outdoor activities. The ideal accessory for water bottles. 5. Non-toxic and environmentally friendly: It is made of non-toxic PP, silicone ring and other environmentally friendly materials, so you can use it with confidence. 6.The diameter of the bottle cap is about 6cm This wide-mouth nut has a flexible handle design, which is easier to hold and saves backpack space. Easy to carry, suitable for any outdoor activities. The ideal accessory for water bottles. Package Included: 1pc* Bottle Lid Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.