SMARTLINER Cargo Trunk Liner Floor Mat Behind 3rd Row Black 2020-2021 Mercedes-Benz GLS-Class 7 Passenger W/ 2nd Row Bench Seats

It fit quite well and is less expensive than many of the other liners

Fit my wife's new 2021 GLS 580 perfectly, made of good material not that cheap stiff plastic, solid but has some give to it,