They are REAL SILK, and well worth it. Satin silk anything is NOT silk, and not nearly as comfortable. Just be sure to hand-wash or use gentle cycle, then line dry in order to care for them. I messed up my first pair of silk pants by washing in regular cycles, but I loved them so much that I used fabric glue to repair the waistband area so that I could continue wearing them around the house. (I still wear them.)

Real silk is cooler when it is warm / hot, and warmer when it is cool. I'm glad I chose to spoil myself, and really hope these will last me a long time. And these have pockets, which may not seem important until you need them.