These rugs look great on our natural-colored hickory floors. They're heavy and thick with a rubber backing so they don't slip. They're much more comfortable to stand on than you'd think from the texture of the material.  I ordered another in runner length for our screened porch entry.

Pros: Good value for the price, high-quality appearance.
Cons: One of the two I ordered isn't laying 100% flat -- very slight curl on one side -- but I'm hoping that will relax over time.