NUK Winnie the Pooh Learner Bottle NUK Winnie the Pooh Learner Bottle helps to ease the transition between breast/bottle feeding & drinking from a cup. The bright, Disney design features a silicone, non-spill spout & easy to grip, anti-slip handles to ensure that learning to drink from cup is simple, fun & mess-free.NUK Winnie the Pooh Learner Bottle is BPA (Bisphenol A) free & can be sterilised using steam or cold water sterilisation, or the Vapo Rapid Steam Steriliser (dishwasher & microwave sterilisation is not recommended as this can cause material damage). NUK Winnie the Pooh Learner Bottle is designed for children aged 6 to 18 months.