Honig's MLB Style Long Sleeved Umpire Shirt. Made from comfortable, moisture wicking ProSoft fabric! This closed-hole mesh is more durable with virtually no "see-through" as compared to traditional micromesh. These baseball-softball umpire shirts are designed to be durable and cool. The PolySoft design is strong to undertake the wear and tear that umpires put on their clothing, but breathes to help keep cool. Perfect for those days that are too cool for short sleeves and too warm for a pullover or jacket.