Feel the breeze as it tries to keep up. Predecessor: Speedgoat. Support Type: Neutral. Cushioning: High energizing cushioning. Surface: Trail. Differential: 5 mm. Inspired by world-class endurance runner Karl Meltzer (a.k.a. Speedgoat Karl ) and the harsh conditions of the Speedgoat 50k race. Ultralightweight no-sew SpeedFrame construction with breathable mesh uppers and supportive welded synthetic overlays. Lace-up closure. Abrasion-resistant toe overlay. Heel pull. Lightly padded tongue and collar. Breathable textile lining offers a great in-shoe feel. Removable foam insole. Balance Stage Meta-Rocker Geometry. Durable injection-molded CMEVA/EVA midsole. Heel-to-toe drop: 4.5 mm. Vibram MegaGrip Hi-Traction outsole features 5 mm lugs for exceptional grip and traction over rough terrain. Imported. Measurements: Weight: 12 oz Product measurements were taken using size 12 width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item not a pair.