You asked, and Altra delivered. Altra's most popular, max-cushioned trail shoe returns with a completely revamped Vibram® Megagrip outsole and a softer, more flexible upper. The new outsole dramatically enhances traction in uphill and downhill terrain while maintaining the max-cushioned feel you love. Traction and durability improvements have also led to a reduction in weight over its predecessor for a faster ride. An impressive 36mm stack height runs evenly from front to back and features an A-Bound bottom layer to add a spring to each step and EVA™ top layer to take the bite out of the rugged terrain. And like every Altra shoe, the FootShape™ toe box keeps your feet happy, relaxed, and stable through uphill climbs and downhill descents.