I used to wear black rubber knee highs, and the sun would shine on my feet and bake them. This year I needed new work boots so I went to Wally world near my sons house and got some for hunting instead. They are 600 gram camo boots made by a company called Hermann Survivors. I've been wearing their work boots for years and they are very comfortable. I know it sounds odd wearing insulated boots in 90 plus degree heat but when the sun is shining on them the heat doesn't get to your feet.