Wear the Earth Wood Nantucket Sunglasses to protect your eyes. The square frames are made using wood that is recyclable and biodegradable. Being non-toxic, these frames are safe to touch your skin. Your eyes are provided with 100% protection from the damaging effects of UVA and UVB rays with the lenses. Their optically polarized quality keeps your vision clear while blocking the glare. Anti-scratch protection keeps the lenses free from damage. The hinges of the sunglasses do not rust as they are made from stainless steel.