I purchased two black jet ski covers from Seal Skin Covers on May 6, 2018. This was an online purchase.
I received the products and put them on my skis. They have been garage kept and only been outside about 2 weeks.
One of the jet ski covers is now dark gray and the other is still black. I have only had them a total of 6 weeks.
I contacted them and they will not exchange either one because they "don't warranty against fading".