Sort, stack and sequence these Rainbow Wooden Semi-spheres. Made of smooth Beech wood, this 21-piece wooden set is suitable for ages 10m+. An imaginative set for open-ended, loose parts play, these wooden semi-spheres feature rainbow colors and natural wood grain. These tactile, multi-sensory blocks endlessly fascinate toddlers with their smooth texture and calming colors. The paint is water-based and non-toxic. Colors include red, orange, yellow, green, dark blue, light blue and purple. Size: 1.6" dia.