We've had a few threads lately about summer suits. I'm curious what materials people favor. I currently have only one suit that I consider business-appropriate, which is a dark tan tropical weight wool. I've been thinking of getting one or two more suits for wear on very hot days. While I've always been intrigued by cotton summer suits, they don't seem like a practical choice for a business suit. Anyone have a favorite wrinkle-resistant material for the summer?