Encourage children to see the world in a different light with these Primary Science Color Mixing Glasses! Students can learn about primary and secondary colors by using the included colored lenses. Each frame can hold up to two lenses for the ultimate color mixing experience! Includes frames, 2 red lenses, 2 yellow lenses, 2 blue lenses and 2 distortion lenses. Suitable for ages 3 and up. Plastic. Package, 16.5cm x 26.7cm x 4.45cm . Learning Resources