The OXO Tot Transitions Straw Cup's almond-shaped, spill-proof straw conforms to tot's mouth and minimizes mess, easing the transition from bottle, breast feeding, or sippy cup. The straw valve opens as soon as tot's lips touch spout for easy drinking, and the hinged cap closes to create a leak proof seal. The removable handles provide a comfortable grip for your little one, and the cap and straw are removable for easy, thorough cleaning.