Altra’s most aggressive trail shoe—the King MT 1.5—now has improved features to help you dominate the muddiest, slickest, rockiest courses out there.

The King MT 1.5’s new design features a stronger reinforced mesh upper and enhanced drainage features on the toes and medial midfoot to increase the shoe’s performance on wet terrain. Altra’s FootLock™ technology – a midfoot strap to lock the foot in place on steep descents – was moved lower down on the arch for increased comfort. The neoprene inside the heel is softer and more secure for less slipping with a better fit.

With significant 6 mm outsole lugs, the King MT 1.5 is designed for lateral braking, medial gripping and maximum traction. Topping those lugs is Altra’s popular Ego™ midsole for high rebound at a low weight, along with a flexible StoneGuard™ rock plate for extra underfoot protection. These features, combined with a Vibram MegaGrip™ outsole and a low 19 mm stack height, make this shoe ideal for Spartan/obstacle courses, mud, wet grass and burly mountain climbs.

The updated design of the King MT 1.5 also comes in exciting new colors with black/gray, red/black and yellow/blue for men, and gray/pink, red/purple and black/gray for women.

The King MT 1.5 is available now for $140 on or at your local running specialty retailer.

Altra King MT 1.5

The Altra King MT 1.5 features Zero Drop and is ideal for off-road running and aggressive trails.