Kansas Jayhawks Sippy Cup – 2 Pack – Welcome to Detroit Game Gear here is the product description. Keep your rookie fan satisfied with this officially licensed Sippy Cup 2-Pack. Each 5 oz. sippy cup is is spill-proof, dishwasher safe, and decorated with team graphics and colors. The cups are tested for safety and durability and are BPA and Phthalate Free. Each cups comes with a valve in the lid to prevent spills and leaks.