Honestly, I only just found out this kind of clothing exists. And it’s not just some special gear, it’s totally regular clothes that somehow protect you. Did they put sunscreen on it?
I read that linen, cotton, and basically any thin, natural, light-colored fabric doesn’t absorb UV at all. But everyone always says light clothes made of natural fabrics are the best choice for hot weather.
I think it’s important to separate what kind of clothes they are and what they’re for. I mean, for everyday life I’d pick natural fabrics, of course. But my friend, for example, plays a lot of soccer. And I like to head out to play golf from time to time. I have golf polos, and my friend the athlete has his soccer kit, and both are made of special fabric with a special treatment and a denser weave, which helps protect you from the sun even at its peak. On the other hand, why play at peak sun anyway?