I have a 10 gauge extension cord running to my shed, trip hazard as well as I'm concerned cutting the cord dragging things over it so these work perfect. I just threw them down last winter, haven't even nailed them down yet and am very happy with how they are working already.
Unlike a lot of cheap/thin alternatives, these things are basically a thick slab of dense vulcanized rubber. They smell bad out of the box but are pretty much indestructible.
We used this product in our manufacturing facility to cover 3/4" conduit across walkways to meet safety managers specs to remove trip hazard to avoid being written up. Easy to fasten down and durable used a total of 12 pieces. Very happy with the look and function.
Gramps 
