I recently installed one in my 2017 SF. Home Depot has a 4ft. x 5ft. x 1/4"-3/8" thick large rubber composition floor mat that works perfectly for me. Obviously trimming to your specific size is required. I made a pattern from a large piece of craft paper and cut the thick rubber mat with a box cutter. Absolutely nothing slides around now. It extends all the way to the second row seats and I can roll it up when using the third row seats. I attached a small pic of the pattern to look for at Home Depot. It was $25-30 for the 4x5ft.