The Simple Modern Summit with Straw Lid for Kids is the perfect vessel for toddlers and youngsters, and this pack offers both a 14oz stainless steel bottle as well as a 16oz Tritan plastic bottle. The dishwasher safe vessels come with a leak proof straw lid. The 14oz double walled, vacuum insulated 18/8 stainless steel bottle keeps your child's water or milk cold for hours, and the 16oz durable, Tritan plastic bottle is lightweight and perfect for life on-the-go.