I purchased these for a new mattress that needed the deep pockets that this product offered. I ordered this brand and another one that both claimed they had deep pockets for the corners. The other sheet set was deep, but still did not fit securely & kept coming apart. This sheet set, though,  really kept it's promise. The sheets stay in place all night & no more having to readjust them every morning. They are so incredibly soft that you'll look forward to sleeping in them every night.  The no wrinkles make the bed always look perfect. A great value!