Vista Kids is handmade with cellulose acetate. The material is made by mixing cottonseed fibers with plasticizers and stabilizers creating a semi-synthetic plastic that accommodates virtually all color combinations. Because the coloring agents are sealed into the frame, the frames do not lose its luster over time as well as making this frame hypoallergenic. The sheets of acetate are overlaid by hand then cut out to make each frame, one by one. This manufacturing process, known as pantographing, creates frames with a great deal strength and stability. We want your children to be healthy and active.