Here's an old school 1978 vintage ad by PONY for The Runner, The Racer & The Strider shoes donning their VSD sole.
Ad info is below:
Perfection,
Precision,
Fit-
PONY
PONY running shoes represent a quantum leap in safety, comfort and performance for runners. The heart of these great new shoes is their sole. The PONY VSD sole (Patent Pending) insures optimal shock absorption, pronation and forward motion at the ball of the foot. This is achieved through specially designed nipples on heel for maximum shock absorption; special treads for increased traction and natural transfer of forward energy as runner pushes off; and specially contoured nipples designed to absorb initial shock and promote natural pronation of foot. In total, this new generation of PONY running shoes has, unquestionably, set the standard by which all other high-performance shoes will now be measured.
The Runner The Racer V.S.D / Ms. Racer V.S.D The Strider
PONY
A STEP AHEAD
251 Park Ave.
New York, NY 10010