These pillowcases feel very high quality and luxurious. I have only washed them a handful of times, but I imagine they will hold up nicely and last a long time. I appreciate that they are Oeko-Tex tested and certified but wish they were organic cotton as well. They are sateen weave, which feel thicker and warmer than my percale pillowcases. I plan to use them during the colder months of the year.