Better too big than too small.
First tip: when it%X92s left on your doorstep and it%X92s freezing, let it unroll and warm up in the house for a while prior to attempting the placement. Mine had to be trimmed about 1%X94 on three sides to fit correctly. Tin snips or a box cutter with a fresh blade work well.
Good Value, nice liner
This liner is one of the less expensive versions. I put it in my Metris and got another to go in my Sprinter. So far, the Metris liner is holding up after a summer of use. It would be nice if they could offer a liner with cut outs for the driver side sliding door, but it cut easily-though I couldn't get as nice a cut the other side. It is a work van, so no sweat.