Men's Altra® Superior 5 :: Speed is not subtle, and neither is the Superior 5. It's light, it's fast, and it's trail-running-ready with a MaxTrac™ outsole and a multi-directional lug pattern for traction on any terrain. The updated removable StoneGuard™ uses less material and is lighter weight. With the "burrito" style wrap-around tongue, you get a locked-in feel, which comes in handy for speedy trail runs. Lace up and take off with the Superior 5.