Have you tried LandsEnd.com? At one time, we had an pillow top matteress. I could not find sheets ANYWHERE that would fit the mattress even when the description on the sheets said they were deep pocket sheets....not! LandsEnd.com is where I found sheets to fit. They did not shrink after washing. In winter time, we use the flannel sheets purchased from landsend too......Ohhhh, how snuggly warm and cozy they are!