The teethe around trainer cup is spill-proof and designed for teething baby! from teethers to toys, to sippy cups; babies explore the world around them with both their hands and mouths. The silicone lid has different chew zones, each with a special texture that helps soothe baby's sore gums. The four different texture types also help prepare babies for the variety of tactile sensations they will experience from different foods. This can help parents as they introduce new foods into their baby's diet. as they chew, babies are also helping to strengthen their jaws and tongue which helps with speech development. The lid of the sensory sippy cup is made without BPA or PVC. The dishwasher safe cup is made with food safe, chewable silicone and includes a spout cover for extra protection when it is in the diaper bag.