I found the best thing to keep cool on those HOT 45+ riding day. It is called the COOL SHIRT. It is a minny A/C unit that you wear. I uses small compressed air cans that plug into the hoses sewn into the shirt. I have used this in 106 deg temps and have stayed very cool. I paid right around $150.00 for the set. I am going to get some pictuers up I hope.