By Nuk for toddlers. 6 oz (180 ml). Extra soft spout gentle on sensitive teeth and gums. Easy-grip handles. Stable base. Leak proof valve - patented SureFit technology. BPA free. Nuk brand trusted by moms for over 25 years in North America. Extra soft spout gentle on baby's sensitive teeth and gums. Spout designed to help ease transition from bottle or breast to cup. Easy-grip handles - adjustable to easily align with spout. Flow-control valve activated by child sipping. Lid and valve interchangeable with all Fun Grips & Sip and Smile cups. Made in USA.