Vivobarefoot Primus Lite IV pairs a zero-drop barefoot platform with an ultra-flexible thin sole to promote natural foot movement. Built for lightweight training and everyday wear, it combines a breathable mesh upper with a low-profile, minimalist silhouette. Key attributes: Black | Mesh (polyester) | Zero-drop barefoot design for ground feel | Breathable mesh upper | Thin, ultra-flexible sole | All-weather / weather-resistant performance | Lace-up closure with reinforced overlay for a secure fit | Lightweight construction to reduce fatigue | Flexible sole for natural foot movement | Low-profile, minimalist silhouette | Six-hexagon Vivobarefoot logo on side | Hexagonal tread pattern on outsole | Vibrant orange outsole accent | Dimensions & fit: Zero-drop platform (0 mm heel-to-toe) | 4 mm stack height | Ankle height, lace-up closure | Composition & care: Upper: 100% polyester | Counter lining (microfiber): 57% TPU, 35% polyester, 8% polyurethane | Insole lining: 100% polyester | Outsole: 60% polymer, 30% silica, 10% rubber