Push the limits with these Ray-Ban RB3578 sunglasses for men and women. With their rounded shape, the shades flatter diamond- and heart-shaped faces. Narrow or widen the adjustable nose pads for a comfortable, secure fit. The single bridge and semi-rimless design add elegance, while the thin frames provide a lightweight feel. These round Ray-Ban sunglasses are constructed of metal, so they're durable and can withstand corrosion. The RB3578 model is a go-to for an updated, modern look.