I purchased these for my granddaughter who will be going to college in the fall.  She asked for the gray color.  They are very nice sheets.  I ordered the Cal. king sheets for myself.  The softness is amazing.  I wasn't quite sure what to expect in micro flannel as I had never heard of them before.  I washed both sets and was surprised at how little lint was in the dryer filter.  It was much less than you find with the regular flannel sheets.  Neither set has been used yet, but I am hoping that there was only slight shrinkage.  Can't wait to use them.  I do believe that you could use these sheets year round as they are a very nice weight.  They have a slight sheen look to them without the slickness.