These sunnies also feature an anti-scratch lens coating to strengthen and protect the lens. Triacetate (TAC) Lens – a flexible yet tough material. Ugly Fish PT24. Whether you’re out for a spot of fishing, on your boat, cruisin’ ‘round town, enjoying a BBQ or lazing at the beach, if you've got a pair of Ugly's on you can be assured you’re vision will be crystal clear and your peepers totally protected.