The Vivobarefoot Primus Lux Leather Shoes lets your feet breathe naturally for everyday comfort. Predecessor: None. Support Type: Neutral. Cushioning: Barefoot feel. Surface: Road. Differential: 0 mm. Wilde Hide Leather uppers with perforated detailing for added airflow. Lace-up closure. Thin tongue and lightly padded collar. Leather footbed for a natural fit and feel. PRO5 ultra-thin, puncture-resistant sole. Outsole Thickness: 3 mm. Imported. Measurements: Weight: 7 oz Product measurements were taken using size 39 (US Womens 8.5), width B - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.