I tested many cups learning and I must say that it is actually effective. + Last upside down, full of water and without cap for 1 hour by car in the diaper bag, nothing has trickled down, leaving all perfectly dry baby stuff. + When my son shakes the cup in every sense, 0 leak. + In addition, small coves are perfect for little hands and a child 6 months perfectly manages to catch it and bring it to his mouth or safely without bumping his head. + The design is very nice. In short, it is a product that I highly recommend and NUK is a super brand for many other juvenile products.
