They don't slip! And did I say that they don't slip! :) I get tired and frustrated when fitted sheets slip off of the corners, and I'm a guy!Finally found a set of sheets for my 15 inch serta black Ice mattress that actually stay in place. The material is nice, having 4 matching pillow cases is a plus also. The elastic straps at each corner actually work keeping the fitted sheet to the bed. Eventually I'll get rid of all my other sheet sets and replace them with these. If you're tired of constantly pulling the corners of your sheets back down, like myself, these are the ones. Again my mattress is a serta black Ice 15 or 16 inch high mattress.We found these sheets to be comfortable, fit well on our deep mattress, and love the built in pocket on the side near the head of the bed. I’ve used it for my phone, tv remote, ear buds. It’s handy! This review is all based on price vs quality. These aren’t 5* hotel sheets, BUT, for the price we think they are great. There are elastic straps that holds the fitted sheets in place well. Wash up just fine and come out of the dryer with few wrinkles. My only complaint are the pillow cases. They have the extra material that’s supposed to help keep the pillow covered does a poor job and I end up fiddling with it too much. Not sure about longevity but currently we are using these on all our beds and they’ve been great so far. Especially love them on our guest bed. They held up perfect for our recent week long visitors, who commented on our how nice and comfy our guest bedroom and bedding was. It was all purchased on a budget but is one of the most comfortable spots in our home. Definitely would buy again.Finally I can get out of bed and don't have to pull the fitted sheet back down around the mattress. I Just make my bed and go!!!King size great price and love the pocket I use it to put my RemoteThese are the most comfortable sheets I have ever slept. The extra elastic on the corners are terrific and the pockets are really convenient to keep my controller for my adjustable bed when I have to get up during the night. I know right where it is.I love these sheets they really are great and the fact that they have pockets and 4 pillow cases it the icing on the cake. They cover the corners of our mattress great and don't slide off like other ones do, they really hold tight! Breathable and comfy, will be buying more.The sheets have a cool and comfortable feel to them. They don't wrinkle definitly a good purchase.So soft and thick good quality. I love the feel and look.These sheets are amazing. They are like sleeping on a cloud. The pockets on the sides are game changers. I purchased these for my boyfriend who lives in a tiny condo so there’s not room in the bedroom for much furniture. The pockets on the side make it so that I can put my glasses and phone by my bed while not having a night table. The sheets themselves just feel amazing. 10/10 would recommend.These sheets are awesome and very soft. Just wish they came with six pillowcases or at least had the option to buy more. I need six pillow cases and when I tried to buy two more they came in a different, lighter gray.So soft and very good quality. We've been using for a few months now and it's held up great. It's not wrinkly and gross after you use it as well which is amazing.sheets for our bed, the fit is perfect and I like that they have elastic on the corners to hold them tighter, it's great, thanksGreat sheets. Cool and comfortable