synthetix are great--
natural rubber is latex.
latex melts in hot weather
pair a dice has hot weather
i wont use latex on my boat if at all possible.
75 percent of world's population is allergic to latex, even if not apparent at present. no reason to tempt fate--lol
i wont use rubber backed rugs anymore as i have a nice reminder on my teak and holly sole of that mis-steak from hell...LOL. have fun and goood luck.
is easy to say yes rubber backed when one is in temperate climates--i used to say that-- now i am in hotville i wont mess my boat again. is easier to not use them than to clean the bs off my teak and holly sole.