It has an area of 545 km². Its western border is Olza river, eastern Skawa. Other main rivers that cut the foothills are from west to east: Vistula, Biała and Soła. To the south are Silesian Beskids and Little Beskids, in north it converts into Ostrava Basin and Oświęcim Basin. The towns located on the foothills are: Cieszyn, Skoczów, Bielsko-Biała, Kęty, Andrychów and Wadowice.