We have a plastic storage shelf we use for all our houseplants. I has openings in the shelves. One shelf has a rug and my cat snoozes there (in the "jungle" where he can look outside, be safe and still bask in the sun. However my hubby gets overly enthusiastic when he waters the plants, so they all overrun (yes, I put water catchers under them, but somehow he still manages it) and soak the floor and the cats current favorite resting place. I got these, had to cut out just a bit more at the rounded corners to fit the shleves we have (easily done with scissors), but they then fit fine. And SO FAR, no more overruns thru the shelf openings or onto the floor (not even over the edges). A good purchase.I use my rolling wire rack as a pantry storage. Because I live in the country we tend to store a great deal of food up in case of fire, flood, snowstorm, Etc. The big problem has always been trying to keep the cans from falling into the space between the stringers on the shelving. These mats have eliminated that problem. Cans all stacked neatly. They're easy to see. And nothing is hidden inside of the cardboard box so that it doesn't fall over. In the process of moving things around I did have a spill. Clean up was simply a matter of wiping up the spill with a cloth. The shoving at dried very quickly. I particularly like that there is a side that is smoother and one that has some texture. Textured side is excellent for being able to store things that you don't want to slide around easily. The Shelf liners arrived in extremely good condition they were packed very carefully and thick cardboard which protected them. I cannot say enough good about this product. I'm even considering buying another set for another set of shelves that I have.I bought these for a smaller shelving unit and they worked great. They keep the things you are storing upright. Was really happy to find them for my larger storage shelves, as it will be used to store my jewelry making supplies. They fit right on the shelves with cut out for the support poles and do not slide around. Personally they work great for my needs and would suggest if you buy metal racks, order the shelve lines at the same time.These are big and sturdy. I put it in our laundry room to get all the detergents and cleaning items off the floor. With the wheels on, it was a little too tall to slide into the nook near the washer, under the wall mounted cabinets. With a piper cutter I took 1/2 inch off the top, popped in the end cover into the fresh cut and it looks custom fit. I couldn't be happier!!The shelf liners were packaged so there were no bends or creases so they look very nice right out of the box. They fit our HDX metal shelves from Home Depot perfectly. Will help keep the shelves from becoming scratched or damaged for a long time. They were the perfect thickness.Purchased this 14x36 set of liners to pair with the Amazon Basics shelving unit. They don't fit perfectly as they're about a centimeter short in both width and length. Not a concern for my uses, but it should be noted as Sterling advertises a perfect fit for the Amazon Basics shelving unit and Amazon shows these as a bundle on the shelving unit's product page.I like that these are USA made. The frosted black color looks very nice with the black shelving unit I have. One side is sightly textured while the other is fairly smooth. Nothing much more to talk about as they're a simple sheet of plastic, but I can't find any issues either.I bought my shelves from Target and these things fit absolutely perfect, no trimming and no gaps between the metal bars. I'm not sure how other shelves compare in size (by the smallest difference in size) but I was surprised by how perfect they fit my shelves. The thickness is just right, in my opinion. They are flexible but sturdy and honestly, that's all you need.The product fit perfectly on my shelves and for my purpose.The graphite coloring (more of a transparent look) looks nice on both my black and white shelves.The plastic is thin. I would not recommend using it in a harsh environment (storing car parts, heavy tools, etc.).However, it is perfect for cameral equipment, art supplies, etc.does its jobI bought this with the "AmazonBasics 3-Shelf Shelving Unit, up to 115 kg per shelf, Black" and it fits perfectly. Easy to wipe down with a cloth.Liked that things don’t slip through the grids on the shelf unitExtra fast delivery, my order arrived at least a week before expected! I really love how sturdy and thick the liners are, not flimsy at all. The only drawback for me was the fact that I had to measure and custom fit them to my wire shelves. They were slightly too long and wide for my shelves; I never had this problem with the shelves that I ordered from another supplier. I really love how the colour of the liners matches with my black wire shelving unitI love the price and the fact that I got four in a single package. I would have rated this a 4.5 if the choice was available. The reason for not rating this item 5 stars is because I had to measure and cut to fit my shelves! Thank you and I definitely will order again.A must have for the shelving unit but it’s crazy expensive.