The product measures exactly 56 inches from edge to edge of the seat. I can't speak for all trucks, but my back seat is exactly 60 inches wide and won't fit. And it shouldn't, as it's 4 inches wider than the product. If your truck seats are much wider than 56 inches I'm not sure how they will fit as they have very little stretch. Not sure how this case claims to fit between 56.5" and 61" as the product only measures 56". wide. The seat material seems to work well. The straps for the side hooks and the one that runs under the seat to tighten the floor seem a little flimsy, but only time will tell. I'm guessing it's actually the wrong size in the box (made in China), but the tag on the seat cover matches the code on the box, indicating it's a full truck seat cover size matters.
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