This did the trick for the most part, but I'm not sure I'd recommend them (instead of plywood) for attic spaces you must crawl through. On their own, the big openings in the newer design hurt knees. They also flex more than I'd like to see when spanning the 24" direction. That said, they still do as advertised, are easy to install, and provide a more reliable pathway than trying to balance on joists.

Made of heavy duty plastic. Fits between rafters. Held there by nail. Pretty strong

I needed a walkway in my attic for ensuring that I can check that the roof & its components are functioning properly. Don't be surprised if your joists aren't perfectly spaced. I was but was also able to still place these. Also, I'm in the process of fixing my roof, so I haven't decided if I will blow loose insulation back over the area or lay pieces over the walkway once I'm finished. I will most likely do both: refill the area the size of the joists with loose & then cover with pieces. I started with one pack but plan to buy enough to span the attic joists! Btw, they are cheaper to purchase via Amazon than the other places that sell them. And they ship fast!

It was easy to install. I would like to use them in the difficult to reach areas of my attic, but my insulation is too thick. I wish it had elevated legs, that would also help to go over pipes and cords. The cord cutouts are only wide enough for one 1/2" wide cord. So I used a multi tool to cut notches in my 2x10" and put the grate on top. Now I can access the roof dryer vent easily from the attic. I am 130 pounds and the panels do bend a bit so If I were over 150, I might add a 2x4 support under each. 4 prices is not enough. I will be ordering more bc they are so easy. Also, if you need a temporary walkway to access a leak, these are perfect bc they are removable.
My suggestion is if you think you have it plumb, lay them all out first, bc an 1/8 " off center on the first one can cause the 3rd ones screw holes to tap the edge of your been instead of center.

PROS
-super-easy to install
-easy to get into the attic
-not intimidating
In six years, I have not even looked at my attic, because my husband had told me there was no flooring up there, and I was always nervous about not knowing what kind of plywood to use or installing something incorrectly and unsafely. Finding Attic DEK gave me the confidence in taking on the project. They are small enough to get into the attic easily, and they were very easy to drill into place.

CONS
-price
-not sure about sturdiness
As many others have stated, one pack of four just does not give you very much surface area to warrant the price. We purchased four packs, because we felt that the investment was important.
So far, I have only laid 2 1/2 packs. When I went to step on one, the give was just enough that it made me nervous about laying any too far away from a sturdy space (the 2 x 4 boards in our attic that are secured to joists, where I feel safe standing). We have much more attic space, and I had planned to lay them in areas farther away from the door, but now it just makes me a little nervous.
I am pretty confident that they will do the job of holding the file boxes of papers and books that we are trying to get out of the way, but I am just a little nervous about walking on them and using them as extended floor space (I weigh about 100 pounds less than the maximum capacity).

TIPS:
-screw the screws in slowly. The first few, I went a little high on the torque, and ended up stripping screws. When I was careful to go slowly and angle the screw straight up and down, everything went beautifully.
-lining up the first grid line so that it is on top of the joist is more important than making the pieces fit perfectly together. It is better to leave a small gap if you need so that the first line is on top of the joist. I believe that the ones on which I did that are the ones that feel more sturdy.

I will update this review when I have placed items in the attic, and when I know whether we will extend the project.