Features: -All cups can be switched to free-flow by detaching the valve -Spill-free or free-flow are an ideal fit to baby's skills -Free-flow without valve -Spill-free with valve -Hard spout id ideal for making the final step to a regular cup easy -All MAM cup parts are interchangeable -BPA and BPS free About the brand Mam Baby designs products which allow smooth changes as your baby's needs evolve. Parents will appreciate the reliability of baby bottles, pacifiers, nipples, teething rings and various other innovative and functional products troughout baby growth.