I didnt get the official non-slip mat which has terrible reviews. The only reason I gave them 4 stars is because the rim around the toes is not that soft and tends to rub. These probably fit other makes. would prefer a tighter fit there, as I need to use a hand towel in the gap so as to stay comfortable. If someone would have checked the latch it would have been easily noticed. I tested £200+ headphones and these match if not better on sound quality. Remember to orient the rubber base so that it will provide a flat mounting surface for the rack on the sloped roof of the car, one side is taller and there is a top and bottom. Works great and the sun visor is actually pretty helpful. this is a great buy. So I do recommend if you don’t have back, hip, pain issues.