These ten colorful nesting blocks feature the favorite huge Clifford The Big Red Dog. Your young builder will learn more about letters and numbers while sharpening fine motor skills, building vocabulary and object recognition. Each block features a number, several letters of the alphabet, and illustrations of objects that begin with those letters. Your child can count and recite the alphabet as she stacks. Blocks stack almost three feet high. These creative wooden blocks encourage shape and size recognition and promote active, open-ended play.