I was not that familiar with microfiber when I ordered these cases but I wanted navy blue so I took a chance and I am so happy that I did! These are so soft, yet so cool to sleep on...and I am a hot, hot sleeper! I also sleep with two little dogs who shed a bit so these get washed constantly and they look just as beautiful tonight as they did a month ago when I first got them...about eight washes ago! I ordered King for my Queen-size pillows so I would have the extra material  to fold over and they are perfect! I highly, highly recommend these!