We tested and wore Our shirts to death before we decided to use them. They are the most comfortable shirt I have ever worn hands down. A bad T-shirt can truly ruin your day when they are heavy and uncomfortable. A T-shirt in our opinion should be like your wearing nothing at all. It shouldn't get in the way of getting down to the beach without passing out from the heat and why not look good while you're at it. The Slyde Tee will keep you cool, comfortable, and look good.