Contact Base - Dupont™ Zytel® ST Highback Injected Dual Zone EVA Bushings Extruded, Anodized Aluminum Heelcups Quick-Adjust Forward Lean All New Direct-Connect Strap System 3D Multi-Layer Strap Core PU Leather Straps Tool-Free Size Adjustment Magnesium Buckles Universal Disks Grade 8.8 Hardware Lifetime Warranty Base