Drymate Cargo Liner Mat (60” x 72”), Dog Seat Cover, Trunk Liner, Absorbent, Waterproof, Machine Washable, Protects Vehicle Interior, for SUVs, Trucks, Vans, Cars (Made in The USA)

Not Element specific but you could get a truck bed mat or horse stall mat and cut it to fit if you want something heavy duty? Or just search Amazon for cargo liner, this one came up and is cheap. https://a.co/d/0eBCun86