Sony begins selling the Walkman, a portable music device using tape cassettes.
The Walkman becomes a symbol of freedom and portability for young consumers long before the iPod.
3M invents Thinsulate™ thermal insulation that traps body heat.
The material makes clothing less bulky.
Brothers Scott and Brennan Olson develop in-line skates by attaching polyurethane wheels to ice hockey boots.
They also add a rubber toe-brake to their new design. Four years later, they will launch Rollerblade Inc. and reinvigorate the sport of skating on dry land.
New materials make current in-line skates 50 percent lighter than the originals.