This 16OZ single-wall straw tumbler is made of polystyrene materials, color cup comes with a matching colored lid and straw. Features twist-tight lid with gasket to prevent leakage. 16oz gives you the most comfortable feel, and easy to carry, let you have your favorite beverages on the go. Hand wash recommended. Do not microwave. 3 3/5"D x 5 9/10"H