I absolutely LOVE this product! I have a standard queen size mattress but I added a 4 inch topper that makes my bed so luxurious. I was having a hard time keeping the bottom sheet on without slipping due to the increased height of 18 inches. I read about this one at Linens and Hutch and it stated that it would have enough 'give' to fit those 18 inches so I took a chance, and got it at a GREAT reduced price. This thing is magical...I was not only able to fit it onto my mattress with the topper BY MYSELF due to the quality of the construction but it fits beautifully and really ties those two pieces together smoothly. My fitted sheets now stay firmly in place and I am just loving this!! One of this year's best purchases as far as I'm concerned. Thank you Linens and Hutch!!! Stellar!!!!! (and fast free delivery to boot!!)