The durability of your performance shirt depends on the materials, maintenance, how often it’s worn, and the level of sun and saltwater exposure. Performance shirts are just like other clothes and they will wear out over time. The higher the construction quality, the longer a performance shirt will last.
This being said, the best performance shirts are made to last for several seasons with a normal amount of use. They are constructed using tough fabrics, feature strong stitching, a sublimated dye that doesn’t fade or crack, and other treatments that enhance damage-resistance.