Just wanted to check in here. I now have approx 25K miles on my KingOfFleece seat cover. The cover goes over my leather Russell Day long. I leave it on full time, year round, and it looks pretty much the same as when I pulled it out of the package. I was devastated last week while on my ride to James Bay Quebec. It's 237 miles between gas stations, so I had a 1 gallon can with me to top up the tank along the way. Foolish me decided to refill the tank at the stop with it still on the seat. I filled it up to the very top, forgetting that the spout has to go back into the tank. I slammed the spout back in and about 6oz of gas came spewing out onto my King Of Fleece cover. Fortunately, most rolled right off. The rest went into the outer fabric a little. I was sure it would eat away the cover and get to the seat. I stopped and pulled it back at the next stop 150 miles later, and it was completely dry under there. Other than a very slight discoloration (darker), you would never even know it happened. Thanks for a fantastic product.