This American Strutter Black 'Purrformance' polymesh shirts is one of the most comfortable shirts available in the market today. Whether used as a base layer to help wick away perspiration, or worn as an everyday casual shirt, these shirts make a classy, tasteful statement. Also, these make excellent fishing outerwear as they have UPF30 Sunscreen Protection built into the threads. Wear a long sleeve 'Purrformance' shirt in August in the bay and worry a bout sunburnt arms no more. They are so light and breathable that you can not even tell you have it on.