I've unloaded for 2 years and my first summer I liked the under armour, dri-fit, cool-whatever shirts. I bought the knock-offs @ walmart for 7 bucks. They work great unless its really hot, like in a pup. What I noticed most was they smell or "sour" really bad unlike a plain t-shirt. They are or feel some cooler but they easily snag or tear and smell horrible when really soaked.