The Primus Lite 3.5 is our original all-rounder, redesigned with a new upper that brings us closer to circularity.Designed to move naturally and develop natural strength during runs and a wide variety of training disciplines, it´s perfect for both experienced barefoot cross-trainers and those new to barefoot performance.Upper:100% recycled polyester mesh, Overlay:95% recycled polyester, 5% recycled elastane.100% recycled polyester.Sole:90% synthetic rubber, 10% natural rubber.