I have a king size bed with an 11-inch mattress. I tend to buy all cotton sheets and wind up with sheets that shrink in different sizes - one set will still fit the other set will be useless. I thought a cotton-blend would work better - not shrink. If you read the fine print you will note that these sheets are over-sized and that is no exaggeration. They are so over-sized that they are even more of struggle than sheets that don't quite fit. If my bed was 4 inches wider and my mattress 4 inches higher these might work but as it is now, they don't. 

They are poor quality, poor workmanship and generally I feel ripped off. My fault for not reading the fine-print and relying on reviews. Buy these at your own risk.