Birth & up. Introduce your infant or toddler to the farm, farm animals, colors and dinosaurs with this set of 4 Tuffy sweetly illustrated books that doubles as a soothing teether. Meet precious animals, farm life, colors and even dinosaurs! Playful illustrations and minimal text make this an ideal first "reading" experience for curious children that offers an array of sensory experiences that strengthen fine motor skills, hand-eye coordination, and soothes tender gums. BPA free, these books offer a punch out hole for a toy ring for easy transport and entertaining. This durable line of Tuffy books are uniquely made to withstand the traditional wear and tear from teething babies and toddlers, BPA-free, and washable.