The original Air Trainer (above left) debuted 20 years ago, but Nike finally unveiled the long-awaited update last week. Designed for the rigors of training and preparing for competition, the new Nike Trainer 1 (above right) is the lightest cross-trainer I've tried.

Inspired by world-class athletes like Bo Jackson, who played both Football and Baseball at an All-Star level, the Nike Trainer 1 is an update both aesthetically and functionally. A new sole features diamond grooves which claims to provide more flexibility and support through multi-directional movement. However, during a recent workout what I noticed most was its weight—or lack there of. When I think of training shoes, I remember heavy, clunky (albeit supportive) sneakers. A lacing system connected to the mid and forefoot combined with an inner sleeve make for a great fit, but it's the lightweight aspect that sets it apart for me