Help your baby transition to a sippy cup in style with the NUK® Nature Learner Cups! NUK® Learner Cups are designed to help transition your baby from breast or bottle to cup easier. The spill-proof, soft spout is designed to be gentle on gums while teaching baby to drink from a spout. The removable anti-slip, easy-grip handles fit comfortably into your little ones hands and once removed, fits most cup holders! Every learner cup spout includes an air vent that helps reduce swallowing air.