I have purchased many sets of the bamboo viscose sheets and pillow cases. They are the softest sheets and pillow cases ever. You need to follow the instructions for laundering them as they will be perfect if you do and will come out of the dryer ready to use!!
Love these bamboo sheet set. I am going to buy another set.
This is my 4th set of sheets in 5 months not because they were returns. Quite the contrary. They are absolutely incredible! I have all the colors. I look forward for their return to Costco. I mark it on my calendar. They get washed regularly and they remain soft like butter. Best sheets I have ever owned and I am very "picky" about what I purchase. I want the best and these work for me. Try them. If they are not to your liking, return them to Costco. Trust me, you will love them. I order king size cases separately because I have big pillows.