These stick-on bifocal reading glasses are made of high-quality silicone material, which is safe and environmentally friendly, with clear lenses and no color difference. The round and smooth edges of the lens avoid scratching the face, making it more comfortable to wear. The bifocal lens is clear at the top and reading at the bottom, which can effectively reduce eye strain and fatigue, and improve readability. The bifocal lens can be pasted on any glasses, such as sunglasses, reading glasses, or safety glasses, making it convenient to use.