Thigh cooler? Never heard of this accessory. I have not had any issues in traffic with it getting hot on me. My last cruiser was all motor and it would roast the bottom of your thighs an your butt in traffic but a sheepskin seat cover was all that was need to fix that. Actually that is the best touring accessory you can have, takes all the hot spots from your seat. Luckily (for me at least) the strat does not seem to need one.
Is that where you are talking about?