These are Christmas presents so I can not give a five star rating until next year.  They arrived quickly to Ontario, Canada.  Feel soft in the package and I love the winter dog theme.   Will follow the instructions to wash first.  Google says wash with baking soda in warm water wash using no detergent for first wash.  Also says you can add vinegar to the first rinse which should be cold water.   When the sheets are completely dry by hanging outside or using low dryer setting, rewash using detergent with cold water.  Hopefully with all these steps they will be five stars and provide soft, warm, winter dog themed flannel sheets for my family.  One sleeps with the indoor Devon Rex kitty and says, "Oh the kitty will love these...not."