Key Features :
i : INCLUDES 8 TRANSPARENT CUBES -- This set includes 8 transparent acrylic cubes in purple, pink, blue, green, red, yellow, orange and clear.ii : OBSERVE LIGHT AND RELFECTION -- When the cubes are held at an angle, many squares and rectangles appear inside for fascinating visual effects!iii : EXPLORE COLOR MIXING ON LIGHT PANELS -- Place these cubes on a light panel and watch the colors come to life! Children can look through them and observe color mixing.iv : CAPTIVATE ALL AGES -- Perception Cubes are lightweight, smooth and warm to touch. At 1.25"W, these manipulatives are ideal for babies, toddlers and older children.v : COLORFUL SENSORY PLAY -- These fascinating cubes make great additions to sensory and quiet corners. The tough acrylic also makes them ideal for water play!vi : BRING FINE MOTOR SKILLS TO LIFE -- Foster children's fine motor skills as they manipulate and stack these colorful cubes.