This mattress cover is large enough for a mattress larger than the 12" mattress I have (there is extra room is mine). It was easy to put on and has a good zipper and velcro closure at one end. This is a cloth material, no plastic which means no noise when tossing around at night - yay! 

Note - Wayfair suggested this mattress cover to replace a different one I was returning because I was unhappy with the plastic noisy material. Their recommendation was exactly what I asked for. Thank you!