'Cuz kids never outgrow spills - Trekker is the perfect on-the-go companion for little ones (and probably some adults too) who?ve outgrown sippy cups but not spilling. This bottle features a one-touch AUTOSEAL lid that automatically seals between sips for mess-free drinking. Plus it?s easy for small hands to hold, so it?s perfect for kids to keep on trekkin?.