Year Introduced: 1989

Laces can only do so much - you can only tie a shoe so tightly. How do you make an upper fit like the proverbial glove? Reebok designer Paul Litchfield came up with the Pump, a mechanism on the tongue that allowed wearers to inflate the upper of their shoe, filling in all those gaps. Prohibitively expensive in 1989, it eventually trickled down to the masses.