These are cotton, and synthetic blend now. I've purchased the sheets for over 12 years. I got one set not realizing they've changed. They pill up, and we literally wore a huge hole through them in a couple months. The sheets totally shredded. I went back to sams to look at the sheets again, and the are pilled up on the outside from people touching them..really cruddy quality.

I ordered these sheets, and on initial evaluation they look and feel great. HOWEVER, they arrived smelling like very strong dog poop or a dead animal for some reason and stunk up my whole house. It look washing them twice on heavy duty cycles to get the smell out of them and I think it is still lingering in my living room where I opened the package. Very frustrating. I was gagging just trying to get the cardboard pieces out of them before putting them in the washer.

Horrible sheets. They are not 100% cotton. They do not breathe and are itchy. They retain heat. Extreme wrinkled (fitted sheet). The corners are strange with extra material. The fitted sheet is so thin that it is almost see thru. Definitely not worth the money. I wouldn’t take them even if they were giving them away.

I purchased these sheets and thought they were the same as I bought almost a year ago. WRONG, BUYER BEWARE. They are horrible and nothing like they used to be. I did check all the reviews however with so many 5 stars I thought well I will give them a try. I washed them went to put them on the bed and the seem on the bottom sheet tore open about 4 inches. Never used and first time washed. I hate this because I loved the ones I bought last year. I actually don't get the higher raitings. Go back what you used to sell and you have a winner. I actaully rarely give reviews good or bad but this time I had to tell it like it was. DONT'T BUY. So frustrated to say the least.

Disappointing Quality – Not Worth the Money These sheets were a huge letdown. The so-called "side stretch technology" is just cheap, flimsy polyester that feels weak and tears easily. After just one wash, the cotton top portion started separating from the stretchy sides. The stitching and material quality are clearly subpar. I expected better durability and design, especially at this price point. Total waste of money. They need to bring back the 450 TC 100% cotton sheets

I am so happy with my purchase of the Sam's Club 500TC Performance Sheet Set! The sheets are incredibly soft, smooth, and comfortable. They feel luxurious, but without the high price tag. After washing, they stay soft and don’t lose their shape or color.

Great product. Shipping time was my biggest issue: too long, at better than 7 days.

Top part of fitted sheet is fine. Sides of sheet are pilling up a lot and easily “ scar” up.

Amazing quality, cool, strong corners. These sheets are the best

OK at first, but have slowly developed holes in just over a year. Would definitely not recommend