Hybrid football ball good for ground, artificial grass and firm ground. Upper: Hi-Tech Micro-Fiber Japanese Texture PU 1.2 mm. Lining: Thick & Deep EPDM foam Backing 5.0 mm 1 Layer of treated fabric 100% PES. Material: 20% PU 40% PU Foam 20% EPDM Foam 20% PES. Size: 5. Circumference: 68-70cm. Weight: 410-450 grams. Rebound: 125 - 155 Hits. Pressure: 0.9 BAR - 1.1 BAR. Deformation: 4mm. Panel Qty: 14 PANELS. Bladder: Winding Taiwan Butyl Bladder with Hi-Tech Butyl - Valve Air-Lock for longer period air retention.