These are beautiful and a fun addition to our bedroom in southern Baja; a surf board theme. Be aware, they are designed to hang on the wall.  We made a small frame for them to attach to our bed and to be at a slight angle for better reading in bed.  Also note- for the Cal King size, they send 4 panels and combined they are wider than the bed. Each panel is 22", so 88" total for the four panels. A Cal King frame is ~ 75" wide- so the panels are wider than the bed.  We cut one of the panels down to match the bed size.  For a standard king they will be fine. Standard king is wider than a Cal King.