Zak Designs Avengers Double Wall Tumbler with Straw, 16-Ounce, 4-Pack Pack of two, 16-ounce double-wall tumblers with straws featuring Teenage Mutant Ninja Turtles BPA-free, insulated plastic construction keeps drinks cold and prevents condensation Screw-on lid with straw helps prevent spills Fits in most cupholders 100% reusable; dishwasher safe; recommended for children ages 3+