HD's Circulator Seat Pad really makes day-long rides in summer heat more bearable. You can actually feel the air moving between your butt and the seat. Good investment.

 

In the summer months the beadrider is great. Lets air circulate underneath your rear and is pretty comfortable and a good price. I also have the sheepskin and pro pad gel. They are all good, but to me in the summer you can't beat the beadrider.

 

Got this from another site and thought it gay, but I decided to gave it a try. I went to Wal-mart and bought one of those beaded seats for 9 dollars, cut it to fit my seat on a 09 Ultra Classic, painted it black, tied it on my bike thinking I'd throw it away at the first gas stop. Just got back from down south, 100 degrees almost everyday. 3500 miles, and I brought it home with me. Who would of thought.
Jonnierock

 

seems to me a piece of 1" thick soft foam would work, and could be easily folded in half and stuffed in the saddlebag when parked. That's my plan eventually.

~Joe

 

My seat is plenty soft enough, I just couldn't get any any air under my butt.
Jonnierock