12 months and up. Little fingers and ears will be engrossed by the Wooden Sensory Blocks Set! Children will enjoy discovering the different textures, sounds, and colors. The eight wooden blocks each have a different sensory experience including a jingly bell, a mirror, a viewfinder, an optical prism, scratchy felt, a cylinder squeaker, and rattle balls. Tots' senses are stimulated through touch, sight, and sound - the sensory blocks are made from smooth wood and child-safe lacquers, making them ok for taste and smell purposes! Ideal for developing the senses as well as dexterity and hand-eye coordination. Made from Fsc Certified wood. Each block measures 1.75"" square.