Which groundbreaking sports footwear design feature, introduced in 1979, fundamentally transformed the running shoe market and became a cornerstone technology for athletic shoes?

The sports footwear industry has revolutionized how athletes perform, with technological innovations changing the game across multiple sports. From cushioning systems to lightweight materials, footwear design has become a critical component of athletic performance and brand identity. This trivia question explores a pivotal moment in sports footwear product design that changed the industry forever.

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Nike Air - the air-cushioned sole technology
Adidas Torsion System - the arch support bridge
Reebok Pump - the inflatable custom fit system
Puma Disc - the laceless tightening system