We have a TEMPUR-Adapt Medium Hybrid - King, which is right in the middle of the recommended 8-16 inch tall mattress range to fit this mattress protector. However, the mattress protector completely fails at protecting or even staying on our mattress. It literally slides off our mattress multiple times a day to the point that we just had to take it off and are now shopping for a different mattress protector. Unable to return it since Tempur-Pedic does not accept returns considered to be "bedding" so we're out of almost $200.