Introducing the Playtex Sipsters Stage 3 Milk and Water Straw Cup Set, with two distinct designs so Moms can take out the guess work of what beverage they gave their toddler. Like all Playtex products, these cups are leak-proof, spill-proof, break-proof and all parts are dishwasher safe. Easy to clean and reassemble. As your child becomes more active at ages 12 months and up, these insulated cups are designed for versatility and ensure that drinks remain cool and fresh twice as long. Great for both indoor and outdoor use!