Take a look! These unique glasses and interchangeable lenses let children observe the world while learning about colour. • Features 8 easy–to–change lenses—2 each of red, yellow and blue. • Teaches primary colours as well as mixing to make secondary colours by combining up to 2 lenses per side. • Includes colour–mixing chart. • Durable plastic glasses are sized just right for children, and wipe clean with a damp cloth.