To find out for sure, measure each end from the bottom lip of the door. If crooked, tell dealer to get you new ones and you will install them. Remove crooked ones and save new ones for later....
Same one I have. It goes on anytime I'm dirty/sweaty and have to move the truck. I've had mine for 5 yrs or so, has held up great. Covers just enough of the seat to do the job and goes on in 10 seconds and comes off in 1 second.