3 years & up. Experience the magical world of creativitiy and pencil-free drawing. Use the left knob to draw lines left and right: the right knob to draw lines up and down, or use both knobs to curve the lines or draw on an angle! Shake to erase and start all over with a new design. Helps children develop fine motor skills, eye-hand coordination, and imagination! Measures approximately 9" x 7.4" x 1.75".