These are really nice actually!! For 100 cotton and a pack of 8 for such a cheap price... I really expected some thin, useless after a year, pillow covers but these are a thick fabric, have piped edges for durability, a nice zipper- theyre not the softest but theyre going under a pillowcase so I dont mind. They are tightly woven also so they would work well with any type of pillow, even down, especially with the thickness. I ended up ordering pillows that wont fit these but Im still not returning them because I like them a lot and will eventually have a need. For about 3  change a piece, 100 cotton pillow protectors! Heck ya!! I recommend them!! Stock up especially if you have an Air BnB etc!