Convenient: The(straw cup cap plug) is a highly convenient tool that allows you to easily convert any standard bottle or cup into a straw cup, making it easier to drink on-the-go. Hygienic: The cap and plug design helps to keep your drink hygienic by preventing dust, dirt, and other contaminants from entering your drink, as well as reducing the risk of spills or leaks. Durable: Made from high-quality materials, the (straw cup cap plug) is designed to last longer than other disposable alternatives, making it an overall cost-effective option. Eco-friendly: With the increasing concern over environmental protection and sustainability, the (straw cup cap plug) offers an eco-friendly solution to single-use plastics and disposable straws. Versatile: The design of the (straw cup cap plug) is compatible with a wide range of bottles and cups, making it a versatile and practical accessory for a variety of different scenarios. Product name: water cup overflow stopper accessories 2.0 Color: white Material: Silicone Packaging size: 9 * 8.5cm Package includes: 4 circles+4 squares Capacity: 30oz, 40oz Circular size: 2 × 2× 1.1cm/0.78inx0.78inx0.43in square 1.7×2.4×0.5cm/0.67inx0.94inx0.19in