Learning to drink independently is one of the most important steps in the development of a baby and is a real challenge for patience and skill. This is why we have developed the NUK Evolution Cups: Three new NUK drinking cups, which can be fitted with different drinking tops and thus grow with the child. Each top is designed to adapt to a different learning phase and can be exchanged effortlessly as the baby's abilities increase - very individually and adapted to the learning pace of the little ones. All three tops are 100% leak-proof. All attachments are included in the practical NUK Evolution Cup drinking learning set: Discover the cup that grows with you!