We decided to try these as soon as we got them, so we packed them up and used them while glamping in our teardrop camper for a week.  The other sheets we had just got too warm, since they didn’t have any cotton in them. These were great — super comfortable, and kept us much cooler than the other ones. The pillowcases even made a world of difference. We got home, Imwashed the again, and they still look brand new!