The Heat is On: Switch Up Your Fabrics
My husband was amazed in Italy. The Italian men, they don't sweat. They never look hot, and they're still layered when it's 78 degrees.
The magic is in the fabric. You can't wear the same wool suit all year.
Stick with natural fibers. Cotton, linen, and yes even wool. You have to trade your favorite navy suit to a summer weight wool though. Look for open weave fibers and lighter weights (wool is weighted in ounces, and you shouldn't go over 10 for the summer ...