SIZE: 3 & 2UPPER: HIGH-TECH KOREAN RECYCLED RESIN-FREE PU 1.2MMLINING: 1 -THICK & DEEP EPDM FOAM BACKING 3.5MMLINING: 2- TREATED FABRIC LAYER 100% PESLINING: 3 -SUPER SOFT SPONGE TECH FOAM BACKING 4.0MMBLADDER: WINDING SEAMLESS LATEX BLADDER WITH HI-TECH BUTLY AIR VALVE LOCK FOR LONGER PERIOD AIR RETENTION.INK: ANTI-SLIP KICK FRANCE INK (AZO FREE)COMPOSITION: PU 20% PU FOAM 40% EPDM FOAM 20% PES 20%STANDARD: MATCH /PROFESSIONAL TRAINING