Features: FOR TUMBLERThe lid is suitable for 30oz tumbler, milk cup, fits for Stanley vacuum cup, anti-dust and anti-splash. It is (top diameter x lower diameter x total height x screw part height) about 8.8 x 8 x 3.5 x 2cm/3.46 x 3.15 x 1.38 x 0.79inch. LEAK PROOFTight fit, it is not easy to fall off. The lid has a built-in silicone ring, which has a good seal and is effectively leak-proof. Even when the cup is turned over, no water leakage. ROTATING BUTTONThis tumbler lid is designed with a slide button, easy to slide, close or open with one hand. It utilizes the power of suction for smooth opening and closing. STURDY RELIABLEThe lid is made of plastic material, with high toughness, wear-resistant, scratch-resistant, durable. It has no peculiar smell, high temperature resistance, reliable to use. CLEAR LIDTumbler lid features transparent part, so you can quickly check drink status. And it has straw opening, convenient for you to carry the tumbler for gym, office, travel or at school. Specifications: Color: ivory white+transparent Material: plastic Size: (top diameter x lower diameter x total height x screw part height)about 8.8 x 8 x 3.5 x 2cm/3.46 x 3.15 x 1.38 x 0.79inch Package Includes: 2pcs x Tumbler lid Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.