The exterior of the lid is designed with a silicone diamond texture that increases friction and you can easily unscrew it. There is a silicone gasket at the opening, and the lid of the drinking water has a leak-proof design. A twist is required to open the lid. The lid has a leak-proof design and comes with a portable handle loop. Even if you carry a run, you don't have to worry about spills, and you can rehydrate at any time. The mouth of the bottle is specially designed to drink large amounts of water without sucking hard. Cap twist lock design to prevent spillage. Versatile appearance, smart design, safe materials for easy replacement. Colour:Black Material:PP+TPR Package Contents: 2 * Water cup lid 2 * ring 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.