The non spill sippy cup with soft spout is a good cup to switch to if, until now, your child has been used to a bottle with teat. The non spill sippy cup with hard spout is a good progression from the non spill sippy cup with soft spout. As soon as your child begins to cut teeth, the sippy cup with hard spout can be a good choice. The hardness of the spout will prevent the spout from being bitten through.