These 24-ounce, double-insulated tumblers are made from BPA-free acrylic that will help keep beverages cold. Each tumbler comes with a twist-on lid and durable straw with stopper to keep the straw in place. For use with cold beverages, dishwasher safe on top rack. Not recommended for children 3 and under. Not for use in microwave. Tumbler measures approximately 4"diameter x 7"H.