Great idea, Fireman...
I love my Alaska Leather Sheepskin Seat Pad...quality product, does what it claims, and great folks to deal with. Girl I talked to when I ordered mine said she used one when she road her Sportster from Alaska to Sturgis (now THAT'S hardcore) said it saved her butt. She wouldn't send me pics for proof, dammit.
TIP: Pay the extra $4.95 for them to sew on a nose strap to keep the pad down on the front of the seat. Code: DEADSHEEP
... saves you 10%, no known expiration date on that one.