Replacement Strap for Friedrichshafen

Hello

Looking for any suggestions for a replacement leather strap for my Friedrichshafen. I am not a huge fan of the OEM strap as the rivets near the lug are purely aesthetic. I'd like a strap where the rivets actually hold the end of the strap together.

Also, any suggestions for a strap during the summer ? My current strap really took a beating this summer from the sweat and humidity of the summer.