The Award-winning Reflo Smart Cup is a highly recommended training cup for proper speech, dental and oral development in children. Your little ones can easily learn the fundamentals of open cup drinking without the big mess and hard work. It's the perfect transition from sippy cups to open cups with its patented flow-control insert that allows your child to drink from anywhere along the rim without suction... it's a completely natural feel and flow. No, it's not spill-proof but it is virtually splash-proof and will slow down spills when they do occur. Reflo Smart Cups are proudly made in the USA.