This long sleeve tee is great for men who are into outdoor activities like fall golf trips or those looking for a comfortable work shirt. With a UPF rating of 50, it provides excellent UV protection. Made of 4 - ounce 100% polyester interlock with PosiCharge technology, it's lightweight. The set - in sleeves and removable tag add to the overall comfort. You can wear it alone in mild weather or layer it up when it's cold.