The 1-2-3 Sip! This Cup from Miniware is the only true training cup which helps a child advance all the way from a straw to mastering a real cup. Children practice all the complex movements in steps without opening the valve all the way – it’s like drinking with training wheels. At first a child can sip from the silicone straw, which is soft and feels good against gums and teeth, then move on to practice tilting and drinking from the Lid + Spout and finally master a real cup on their own.