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 percent 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 oz Product measurements were taken using size 45 (US Mens 11.5), width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.