The 360 Grip N' Sip Cup has a soft silicone spout designed to prevent drips and spills. Little ones are animated and active, even while holding (or occasionally dropping) their drinks. That’s why Nuby designed a cup spout with a pressure-sensitive TOUCH-FLO valve that helps regulate fluid intake as children drink. As children sip on the spout, the valve opens and allows liquid through. When sipping ceases, the valve closes, ensuring a leak-resistant cup. Whether your little one stays still while sipping or prefers to keep on the move and hold their cup at an angle, Nuby has you covered. The Grip N' Sip Cup features a weighted straw that allows little ones to drink from any angle. The Grip N’ Sip Cup holds 8 ounces (240ml) of liquid, keeping little ones happy and hydrated. With a convenient hygienic cover, the spout stays clean and germ free while not in use.