These First Years Insulated Sippy Cups make cleaning easier for parents. The interchangeable lids are easy to clean, and there are no small parts to lose at daycare or go down the garbage disposal. The cups are dishwasher-safe and BPA-free! The cup can be used with The First Years Straw and Grown-up Cup lids. The cup is designed to be easy for small hands to hold, and the double-wall insulation prevents the cup from sweating.