The Costa Del Mar Caballito sunglasses are made to be durable and comfortable all day long. Named after a bait-fish so you know these are some tough glasses aimed at providing the best eye protection. The Costa Del Mar Caballito sunglasses are polarized for even more protection. The Costa Del Mar Caballito sunglasses have a lens size of 59mm. The frame material is nylon which creates for the best durability. With hydrolite nose pads as well. You will not go wrong whether you are headed for the full on open water or a surf fishing trip the Costa Del Mar Caballito sunglasses are the perfect accessory to have along.