We ordered these sheets for the 72’x80’ RV King mattress. The sheets are soft (not scratchy at all), breathable, and fit the mattress perfectly. The pockets are plenty deep in the fitted sheet. I highly recommend and I will be purchasing another set.From the description: "With added stretch and durable elastic the fitted sheet is designed to stay snug and fitted to your mattress."Not so. I had to remake our bed EVERY MORNING because with every change of position during the night, the corners would release and we'd end up with the bottom sheet off the mattress.The pockets were deep and I made sure they completely covered the corners when making the bed. The bottom sheet just wouldn't stay on.It's unfortunate, because the sheets feel great.This was a waste of money for me.Had the best sleep for 3nights ,than in quite a whileThese are great. They fit our RV king perfectly. I would recommend.Okay, I normally hate leaving "bad" reviews, and maybe I got two lemon sets of sheets thau weren't pre-washes, but I personally was freaked out by the amount of microscopic-ish lint involved after washing both sets. I always wash my sheets prior to using and can't say I've ever seen even 1/4 amount of lint come off a set, or anything else for that matter, as with the two sets I purchased. I was actually a little freaked out lol.After washing them the first time, I was pleased by how soft they felt as I placed them on the counter for folding. That's when I just happened to notice a very strange and very large dust mote cloud in a conveniently timed sliver of sun as it was starting to descend.Now, because of allergies, I vacuum daily, dust everything once or twice a week, carpet clean often, Zone clean, usually have our windows shut except when airing the place out a few days a week, and have those fancy, overpriced $600 air purifiers (one of which was sitting right next to where the sheets and dust motes were on full blast). We even change our a/c filter every two months. In other words: it's been a long time since I've seen any significant dust floating in the air, much less the crazy amount of strange-looking dust I was seeing at that moment.I realized it might have been coming from the new sheets, which I thought was strange, and gave them a light tap. Cue giant swarm of microfiber dust. I then took them out into the garage to shake them out, only to feel pretty appalled by the amount coming off, including some good-sized lint balls clinging to the sheets themselves. Unfortunately, I managed to inhale a lot of said dust, causing a burning nose and a nasty sinus infection later that night and into the following day.Back into the washer they went, only to see the same thing occur. So, I ended washing them several times more, but none of this lint came out on other loads I washed later or even before I washed the sheets, including dark clothing following the sheets.It got to the point where I was freaked out enough that I wanted to return them (very rare, being that I'm often too lazy lol). My boyfriend later said he liked the feel and would keep them, figuring he's exposed to worse at his job (plumbing contractor)-- though he, too, found it a little strange. I personally think he'd sacrifice all to lessen his amount of laundry, but no matter. I wound up washing them more, just to be safe, and finding the sheets I normally use on a crazy sale that same day, which I normally can't find at a decent price. So I suppose it's a win-win -- err, minus the cleaning up, tons of washing and sinus infection lol.The attached picture is only a small part of what came out of the previously emptied filter, after not one but 3 washings. The fine dust is what I was seeing floating and later on the ground in the garage and on myself. So, yes, they're very soft and I almost regret not being able to use them, but I can't recommend them due to the Star Trek Tribble/apocalyptic dust cloud situation-- at least not without washing them thoroughly first... and maybe having a dust mask and broom nearby.These sheets are soft but they are slightly big for my rv mattress. They are not good if you move around when you sleep. Not very smooth and too baggy.We just purchased an RV and a Queen short mattress and needed some sheets for it. Due to the price and other reviews, I gambled and bought 3 sets in different colors. As soon as I received them ( which was in a couple days), I washed all three sets in the washing machine. They felt very soft when I was inspecting them and putting them in the washing machine. Was wondering if the softness would hold up after the wash. After drying the sheet set, they seemed to have the same softness. These are not thick sheets, but they are not super thin either. They did NOT come out of the dryer all wrinkled and they folded nicely. They fit on my short queen mattress perfectly. They felt very soft and comfortable when sleeping on them. When I returned from my RV trip, I ordered another color. Great value.These are microfiber, so of course they are soft. Very thin. But do the job and can’t beat the price. I just ordered a mattress liner to go under them because the sheet is too thin. I had the rv king mattress given to me so I didn’t realize it was different than a regular king until I measured it. So I found these on amazon in a pinch and absolutely recommended for the price. I’ll order some more expensive ones later .