1978 ad for Scholl Exercise Sandals. In 1956, Dr. Scholl's, an American foot care and footwear company, began marketing in Europe a wooden-soled "exercise sandal" created by Chicago physician William M. Scholl.
Dr Scholl Exercise Sandal
Vintage Dr. Scholl's Original Exercise Sandal Wooden Leather Sz 7, Made In Italy | eBay
Vintage Dr Scholl's Exercise Sandals & Toe Hugger shoes for women - Click Americana
Scholl Exercise Leather Look Low Heeled Mule - QVC UK