Uv Swimwear - Boardshorts. 100% polyester. Excellent uv protection: a fabric’s ability to offer highly protection from uv rays (upf 50 + is the maximum value obtainable). Compliant UV AZ / NZS 4399:1996 standards. Pilling resistant: fabric that is always smooth and pleasant to the touch, tests demonstrate that is resists to abrasions and pilling, with the highest value of 5. Ultra chlorine resistant: fabric that is considerably resistant to attack by active chlorine. Perfect fit.