Comfort and performance team up in one of our favorite new sneaks. Light and airy construction, from the perfed full-grain leather or nubuck upper to the breathable ports designed into the sole. Smooth tonal leather trim. Temperature-regulating J&M Smart Degree Technology® polymers that line the interior activate at both hot and cold temperatures, so your feet feel just right all day long. Linings are treated with antimicrobial protection for enduring wear. Contoured, cushioned TRUFOAM® footbed, perfed for ventilation. Ultra-light, high-rebound TRUFOAM® sole offers bouncy rebound comfort with ports that enhance airflow. Grooved rubber sole with traction inserts at toe and heel.