Thanks to the No-Spill straw and the flip cover the cup can fall over, it won't leak. A non-leaking straw? That's right! In the straw there's a built-in valve that only lets fluid run when the child pressures it. This Vari-Flo -system allows your child to control the flow rate himself. The flip cover keeps the straw clean when the Nby cup is not in use. The handles make the transition from bottle to cup easier. This cup is suitable from 12 months on. It contains 240ml and is available in 3 color combinations.