I'm a gardener and work hard out in the sun all day. I only use 100% cotton shirts & pants (w/pockets) & gloves - all light colors and a big brim straw hat that has a tie string to keep it on in the wind. when it gets really hot I wear "cool collar" and I made a "cool vest" that is terrific in hot summers here. I get all my work clothes from a thrift shop - I like Men's cotton dress shirts the best - look for the ones with a tight weave (hold it up to a light) they really can hold up. I learned this from the field workers - they may look hot in this outfit but if your skin is covered its like you are in the shade. Also, a layer of sunscreen on anything not covered will also shield you from hot rays - its amazing that it works like being under an umbrella.