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. Recycled PET Mesh keeps feet cool and enhances breathability. 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. PRO5 ultra-thin, puncture-resistant sole. Vegan construction produced using animal-free products and processes. Imported. Measurements: Weight: 7 oz Product measurements were taken using size 38 (US Womens 7.5), width B - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.