From city streets to coastal beaches, square-shaped Ray-Ban RB4181 sunglasses give you a classic, simple, and elegant style while still protecting you from the sun's glare. The shades have strong yet flexible propionate frames, so they hold up against the sun's heat, whether you're on vacation or just in your backyard. These full-rim sunglasses are lightweight and hypoallergenic so you can wear them in easy comfort. If you have an oval or round face, the square lenses of RB4181 sunglasses are ideal for accentuating your features.