Just be careful with these. The underside of the cover itself can stain the seats.
Thanks for the heads up, but so far they have not. Possibly because I applied two coats of Gyeon Quartz Leathershield after I took delivery in December 2018. I only purchased the hoodies because America's Tires had warned me in advance they were out of the plastic they use to cover the seats. Tires were installed on a day of very heavy rain and the seat hoodie was exposed to water. I've only used them when taking the car in for service.
My experience with Gyeon Quartz Leathershield has been positive so far. I did two applications and there is still about half of the bottle left. I have driven the car wearing Levi 501s and my wife wears black colored jeans and there has been no dye transfer so far.
Took the car in for my HW3 upgrade in February and a Tesla SC employee left grease marks on the white seats (forgot to bring the seat hoodie). I used Gyeon Leather Cleaner and the grease marks came right off, no problem...