By Nuk for toddlers. 10 oz (300 ml). Leak-proof valve - patented SureFlo technology. BPA free. The complete line of Graduates cups and tableware by Nuk is designed to make learning to self-feed easy and fun every step of the way! Contoured shape makes drinking easier. Flow-control valve activated by child sipping. Lid and valve interchangeable with all Fun Grips and Sip & Smile Spill-Proof Cups. Made in USA.