People may argue that the ultimate summer fabric is invisible, which is to say, just air. Being naked or topless, whichever you prefer. I get it. It's convenient, it's brainless, it's weightless, and it gives you a great tan. But for people who actually want to get into restaurants (and avoid skin cancer), we choose to wear real fabrics, such as lightweight cotton, linen and summer wool. Layering is out of the question on hot summer days, but a great summer shirt will keep you looking stylish and feeling cool.