A thick plastic cover, clear, with heavy duty grommets and bungie cords to keep it in place. As is typical with Omlet, there are design details that only make sense when you install it. In this case, the free edge of the cover inserts right between the mesh of the run and the ridgeline of the coop, so there are no drips between the coop and the cover. Only regret: wish I'd ordered two to cover the length of the run. This 6' cover doesn't go all the way to the ground, so some snow does drift into the run along the edge.
I have a dark cover on my run but wanted to let more light in when I added an extension. This is perfect. It's been up for a month in strong sun and high winds and still looks like new.
This product is OK but I have found that under the elastic tension of hooks the plastic is too soft and the metal eyes which the elastic goes through are distorting the plastic. it is also much more light weight than the heavy duty cover which is excellent and will clearly last many times longer. If given the choice again I would have gone with 2 heavy duty covers
The 2 m. clear cover with the gutter is okay. I have used it to put along the side which is doing a good job. I have bought a very large clear cover to put over the whole walk-in run which is recommended for market stalls. I think the 2 metre cover is fairly useless to put on the top of the walk-in run as the rain still blows in the side. Just a note - I think the walk in run is too high. As long as it is sufficient to just about stand up in it I don't think the extra height is necessary.