ENJOY LESS MESS & LESS STRESS: The uniquely designed straw has a spill-proof valve that opens when your child drinks, and closes automatically in between sips CLEAN UP QUICK: Opens for thorough cleaning; top-rack dishwasher-safe SIP ON THE GO: The unique design allows for easy one-handed drinking CAPACITY: 14 oz (414 mL) Running around the house, playing dress up, and sipping yummy drinks with a straw—super fun for kids. Cleaning up drippy spills? Not so much fun for busy parents like you. Enter the Leighton Tumbler. The straw on this unique tumbler has a spill-proof valve that opens when your child drinks and closes automatically in between sips, so it’s pretty amazing. The easy-clean design comes apart for thorough cleaning and it’s top-rack dishwasher-safe. BPA-free. For ages 3 and up.