The MAM Cooler Teether features unique shapes and textures to effectively relieve baby teething symptoms and foster baby’s sensory skills. Made with 100% purified water and baby-safe materials, you never have to worry about your baby ingesting BPA or any other harmful chemicals while using this teether. MAM Cooler teething toys are uniquely shaped in order to provide teething relief for back teeth in those hard-to-reach places. Simply place Cooler teether in the refrigerator for one hour to achieve optimum cooling effect and provide baby with a great sense of relief and comfort from oral pain caused by baby teething. MAM Cooler teethers are extra lightweight, durable, and safe teething toys that effectively cool baby’s mouth and massage sensitive and aching gums.