No more messes thanks to leak-proof seal around straw opening and spill-proof valve inside straw 100% BPA-free Soft-grip bottom prevents slipping and tipping Fits most car cup holders Top-rack dishwasher-safe lid and body; straw twists apart for easy cleaning Ages 3 and up Thanks to the Contigo Kids Spill-Proof Tumbler with Straw, children over 3 can sip out of a cup like the big kids. No need to worry about messes, even if your little one holds this well-designed tumbler upside down. Our innovative engineers put a leak-proof silicone seal around the straw opening on the lid and a spill-proof valve inside the straw. For good measure, they added a soft-grip bottom pad to minimise skids and tipping. Road trip. The 410ml tumbler fits most car cup holders. Rest assured, all materials are 100% BPA-free. After a full day at the playground, youll be happy to know that body, lid, and straw are dishwasher-safe on the top rack and the straw twists apart for easy cleaning. For ages 3 and up.