Jump into off-road adventure at the drop of a pin in the Vivobarefoot® Primus Trail Firm Soft trail-running shoe!Predecessor: None. Support Type: Natural.Cushioning: Barefoot feel.Surface: Off road.Differential: 0 mm.100% vegan-friendly construction.Breathable 3M™ mesh and ultralightweight laminated upper materials. Amphibious upper design.Speed toggle lacing system. Protective toe reinforcement. Thin comfort tongue and lightly padded collar. Soft fabric lining offers a great next-to-foot feel.Removable 3mm Poliyou insole. Pro 5 puncture-resistant synthetic outsole. Imported. Measurements: Weight: 10.6 ozProduct measurements were taken using size 45 (US Men's 11.5), width D - Medium. Please note that measurements may vary by size.