This sheet set is AMAZING. I previously purchased a set of Extra Deep 400 Thread Count Supima Cotton sheets from The Company Store for twice this price. I usually love The Company Store bedding products, but not this time. The Company Store sheets were supposed to fit mattresses from 16" to 20" deep. My mattress is 18" deep (including the depth of a 3" foam topper). The Company Store sheets had elasticized corner gussets that would just barely go on the bed and as soon as you would lay on the bed, the corners would pop off. This set from DreamFit on the other hand really IS deep enough to stay on and does NOT pop off. The pockets are deep and the elastic around the bottom edge of the fitted sheet is much thicker than you would find on typical sheets, but the really excellent design feature that ensures the fitted sheet stays on is a half inch wide, strong elastic strap that is sewn at a 45 degree angle at each corner (so the elastic strap lays flat under each corner of the bed and physically prevents the sheet from popping up at each corner). A note about the weave/fabric of this sheet set. When I opened the package, I could not believe it was actually cotton because it was SO soft and silky. But the packaging says it is indeed 100% cotton...I'm in love. After I laundered the set prior to putting it on the bed, it did feel slightly less silky, more like typical sateen cotton sheets, but still much higher quality, smoother, finer threads perhaps. They do wrinkle somewhat in the dryer like normal cotton sheets would, but I don't mind that much because they smooth out okay once on the bed and after a couple nights sleeping on them. Very silky to sleep in, very comfortable and smooth. I returned my other sheet set from The Company Store and am buying another set of these DreamFit sheets in another color. I highly recommend them. You may not have heard of the brand, but try them...you'll probably love them and be just as happy with your purchase as I am.