I bought the Orthoheel "Relax" slipper 2 years ago and have bought the "Gemma" slipper for colder weather.  I really love them.  They have great arch support but have a softer footbed than the "Relax" slipper.  They are so comfortable!  They would be too warm for summer weather but they're perfect for cooler temperatures.  My order arrived quickly and the slippers are wonderful.