So far these are great sheets.  The fitted sheet truly is extra large and easily fits a very thick mattress.  So much easier to put on then any other make we have used.  They are extremely soft and comfortable and do not wrinkle.  We have only washed them once so far, but they came out perfect.  Time will tell how durable they are, but they seem very well made.  We like them enough that we are ordering several more sets for our other King size beds.  They are a very good value also.