The legend has evolved. Altra's best-selling trail shoe is now equipped with a seamless, stitch-less upper that’s lightweight and durable. With streamlined construction, stay nimble and confident on any terrain. An upgraded MaxTrac outsole offers stickiness and grip underfoot while an Altra EGO midsole helps achieve the perfect combination of responsiveness and comfort. Let your feet move naturally through nature with Original FootShape Fit. This legendary trail runner is calling for some rugged trail adventures. Signature FootShape comfort gives your feet more space to sit naturally and is designed to address biological differences in men's and women's feet. Our Balanced Cushioning platform positions your heel and forefoot at an equal distance from the ground, encouraging better alignment and form. Original Altra EGO foam is designed to harmonize the balance between responsiveness and comfort. Grippy MaxTrac outsole provides the perfect combination of grip, traction, and durability on all types of terrain.