6 months & up. The Wimzle is perfectly sized for little hands, encouraging pushing and pulling of the colorful pieces through the center and spinning of the shapes. What an adventure for a little one's senses as the textured spheres slide back and forth at clever angles. Each Sphere features a uniquely shapped silicone ring little fingers grab, feel, spin, squeeze, pull and explore. The Wimzle measures 6 1/2" x 6 1/2" x 6 1/2".