Neoprene, or or better yet Ensolite "Fitness Pads" are available. They are also sold as camping pads for sleeping bags. You want a "closed cell" pad like Ensolite so it doesn't absorb moisture.

There's also rubber "Placemat" sized pads available. I buy mine at my local "Everything's a Dollar" store. They're handy to move from bench to bench..Or to the dining room table when your wife's not around.

Regards
Ken

Last edited by Ken61; 05/20/15 11:03 AM.
I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.