These are oversized for standard pillows. The material seems to make the pillows seem hotter when sleeping on them. Because of the larger size the outside slipcovers do not stay on the pillows. I would not recommend. I should have spent more money for better quality.
If you are looking for a pillow protector that does not alter the feel of your pillow by squishing it into a tight and narrow case, then these are the pillow protectors for you!!! They were a bit 'newbie' stiff at first so I washed them before using and they are fine now. They hit all the musts in a pillow protector...allergy helpful, bed bug and dust mite proof, and still leave you with your own pillow comfort level! I am a happy shopper with this purchase!
You put your pillow in and is like placing it in a balloon. It takes a bit to deflate when you place your head in it, but then as you move your head the air gets trapped and takes a while to get out. and because it does not breath well, it can turn any pillow into a warm pillow. It totally gives whatever pillow you have and spend money on a brand new feeling which is not comfortable.