I have a Tempurpedic queen Size cooling mattress. Love the mattress. I bought this mattress protector assuming it fits their mattresses. It's AWFUL! It doesn't stay in place. It bunches up so much that it wakes me up. I washed it AGAIN to try and shrink it and that didn't help. It woke me up at 3 am and I ended up ripping it off my bed and tossing it in the garbage where it belongs. DO NOT BUY THIS PRODUCT!