We have only been using theses for a couple days, but so far so good, These sheets are a thinner material, definitely not like a 600+ thread count cotton. But so far they have been good, being as it's 100+ degrees where we live, the lighter material has not been a problem. They do fit the deeper pocket mattress, which is the problem I had with some others that were ordered. Will give them some time and see how they ware, possibly be ordering more.