I gave this five stars with a slight caveat: for my purposes, it is a five star item. Those purposes are to line the edge of a garden bed that is away from the house, with dirt and mulch on one side, and a ‘dry creek’ rock bed on the other (camouflaging a French drain).If you want those picture perfect round or straight edged beds next to your lawn and home, though, just bite the bullet and buy metal edging—plastic, especially at this height, isn’t going to cut it. Plastic will ripple and deform, especially in the heat if temps get over 90 (and in this day and age, there aren’t too many places left in the US where that will never happen). It says so in the fine print about the temp and the rippling.I live in a warm climate (7b), and yeah, it gets over 90 a lot in summer. But I’m not worried. A little rippling adds a bit of charm to my dry creek bed! It’s not trying to be perfect. But it needs the height I could only get with this stuff or with much more costly metal. If I needed perfect edging, I’d buy metal. I’m seriously considering metal and stone for the beds out by the end of the driveway, since that is for more public consumption/has to pass HOA muster. But for this particular project, keeping the mulch out of my French drain, and keeping the rocks out of my garden bed, this stuff is great.The pins it comes with are steel, but I didn’t want to mess with the skinny weird pins, bought a set of the landscape spikes for edging, the kind with twisty threads. My contour for this project was straight in places, curved in others, and other than a few choice words when I started (because even laying it out in the sun didn’t make the curl from packaging go away at first) it wasn’t bad at all to install. I have rheumatoid arthritis, and hard red clay soil, and somehow this stuff went down like it was nothing, all 132 feet of it (bought two, prob need a third short roll).For projects that involve a simple barrier that doesn’t have to look perfectly straight or perfectly smooth, this stuff is great. I’m filling in the soil side of part of the garden bed now, and when it is filled with the mulch on top, nobody is even going to notice the skinny barrier.It was a bit easier to cut with wire snips than my 1.5 inch no-dig edging was (different mfr), so I do wonder about longevity. But mine is well supported on both sides—covered with rocks on one face, and dirt on the other—so it will never see a tremendous dose of UV except along the top edge. Again, if you wanted to have one face exposed, this works best if you can accept some imperfections.What else did I learn? You need a lot of spikes to get a curve just right. I used about 100 over 132 feet. That may sound excessive; I was putting one in every five or six holes, but in some places, I had to put one in between those because it was twisting a bit or sitting weird.Another tip: instead of the apical hole of your curve, attach the spike to the hole just before that (working from left to right, go one hole to the left from the one at the center of the curve). It just sits better that way, like it needs to pivot off of a close-by anchoring pin to get the curve just right.Yes, there are a few caveats with this product. Another is that it actually measures 3.75 inches, not 4 as stated, for height. But I am using it with 3 inch high concrete edging blocks on the other (higher) side of the bed, so for me that wasn’t a deal breaker. Most things that claim a size tend to be smaller than claimed: rugs, garden boxes, plant pots all seem to round up these days. But I think if this stuff was taller, it would be futzier to control, less stable, so it’s fine.I will be buying another roll to finish the project, once I measure and see what length I need…