This tumbler, with straw and screw-on lid, holds 16 ounces and is made of durable, long-lasting materials. The straw is tough against chewing and biting, while the double-wall insulation keeps drinks cold and prevents condensation. With minimal splashes and mess, this tumbler also fits in most car cup holders for convenient travel. The fully wrapped inner artwork is made of heat-resistant PET, so it looks great from any angle and will not melt in the dishwasher - it can be safely washed in the top rack. Everything is completely BPA free. Do not microwave. Recommended for children ages 3+.