If you sweat a lot then I actually don't recommend hard pad, it will just feel uncomfortable.
What I'd suggest is maybe look into PureTrak Talent from what I've heard it's machine washable.
Or like Greystoke said Artisan mouse pads are usually pretty sturdy and can withstand some beating. If you go with Artisan you'd want to look into Zero, Hien, Hayate (slow to fastest).