Birth - 3 years. IQ Baby products nurture the whole baby: body, mind and spirit.These soft-stuffed fabric blocks are perfect for little hands. Some blocks have peek-a-boo windows and doors, others crinkle, jingle or rattle. All blocks have textures for little fingers and mouths to explore. Each block measures 3'' square. Also included is a vinyl storage & carrying case that measures 13''W x 3.5''D x 11''H.