The straw caps are made of silicone material, convenient for use. Adorable straw plugs can add an amusing and fun atmosphere to your daily life. It saves space and is easy to store, it will be not taken up much space. Features - ColorAssorted Color - Material:Silicone - Size: 4.00X3.00X1.50cm/1.57X1.18X0.59in - When you open the straw cap to drink, they will suspend on the side of the straw, so they won't be lost. - Convenient to use, prevent the straws from the dirty things as well. Meanwhile, it can also distinguish your straws. - Small in size and light in weight, it won't take up too much space. Easy to store and install. - These straw covers can protect your straws from dirt. Also, these straw tips covers are nice decor for straws. - Lightweight and small size, easy to carry with you when going out, very convenient for you. Package list: x straw covers