I have hypersensitive skin, which means when I get into the direct sunlight after a couple of minutes my skin starts to sting. There’s lots of discomfort but not when I have my Coolibar shirts on. I love this material, I can’t say enough about it! It’s soft against your skin, its light weight, it breaths and doesn’t hold the heat in. I’ve tried other brands of sun clothing but they don’t hold a candle to Coolibar. The other brands of material are on the itchy side, its light weight but it holds the heat in, not good in the summer time.