Klean Kanteen 10oz Kid's Cup is easy for small hands to hold, fits in most stroller and car seat cup holders, and comes with a splash-proof Straw Lid with matching reusable straw. Both the cup and straw are made with certified 90% post-consumer recycled steel. Our extra durable Klean Coat® finish keeps Kid Cup colors bright and scratch free. These cups stack up to a whole lot of fun at home and on the go! NOTE: Kid's Cup is NOT leakproof.