For activities beyond the sand or surf, slip on Costa Ocean Ridge 311 eyeglasses. As tough as your adventurous spirit, these frames consist of bio-based TR-90 nylon, which is lightweight, highly durable, and maintains its shape in extreme temperatures. Rectangular rims are particularly flattering on heart-shaped, round, and oval faces. Rubber nose pads and textured skull temples provide a snug fit and a comfortable feel. Choose these nylon-frame eyeglasses and enjoy clear views, even in the harshest conditions.