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Insole: 6 mm Contour Footbed with removable StoneGuard™
Upper: Seamless wrap-around engineered knit
Midsole: Quantic™ with InnerFlex™
Outsole: MaxTrac™ Rubber with TrailClaw™
Stack Height: 21 mm
Weight: 7.0 oz / 198 g
Lightweight. Fast. Grippy. Fast. Responsive. Fast. There are many words to describe the speedy Altra Superior 4.5. The Quantic™ midsole offers a lightweight yet responsive ride for high-speed trail days. The MaxTrac™ outsole and multi-directional lug pattern brings grippy traction to any terrain. The improved upper brings better breathability and durability. And finally, the removable StoneGuard™ offers lightweight rock protection for when the trails get extra rugged.
More about this brand
Altra founders Golden Harper and Brian Beckstead met in high school in 1997. They've been running together ever since. Even as young kids, these two pursued the sport with passion and commitment, both for fun and in competition. Golden ran his first marathon at age 10 and then set an age group world record two years later.
The Runner's World Best Debut designation confirmed Altra was on the right track—and runners agreed. Altra was just warming up and has continued to receive praise for their breakthrough innovations. Altra collected several editor's choice awards in addition to many other awards, including best winter trail shoe, best traction, and comfiest ride.