This fun straw tumbler will keep kids hydrated without any fuss! Prevent messes and spills with a kids tumbler that will not leak–the attached straw has a valve that allows easy access to water, but will not drip when the tumbler is tipped over. The screw-on lid fits securely, and everything is made of durable plastic and silicone. Perfect for young toddlers graduating from sippy cups, this tumbler features colorful artwork to make hydration fun. Do not microwave.