Solar System Represents a Breakthrough in Sun Protection Clothing – It's Super-Soft and Moisture-Wicking. This Hook & Tackle performance fishing shirt features will wrap you in comfort all day long. Most sun protection fishing t-shirts in the marketplace are made of 100% synthetic fabric. They are hot, clammy, odor-prone, do not breathe and generally are very uncomfortable. Cotton fishing t-shirts are breathable and comfortable but do not provide effective sun protection. We invented a solution called Solar System, a breakthrough technology that gives you the effective sun protection of a synthetic fishing shirt but with the comfort and breath-ability of a very soft-touch cotton fishing t-shirt. We further upped the ante by adding moisture-wicking properties that wicks excess perspiration allowing you to keep cool and comfortable and resistant technology allowing you to stay cool and smell fresh while protected from the sun's harmful UV rays.