Cut From 2.0mm - 2.2mm Full Grain Leather Engineered With Pull-Straps And Elastic Side Gussets For Ease Of Entering And Exiting The Boot Lining ;The Vamp Lining Is From A Hi-Tech Needle-Fi Bre Blend With Excellent Perspiration Absorbency And Treated With Ultra-Fresh To Impart Hygienic And Anti-Bacterial Properties To The Material; The In Sock Is From An Ant Static Non-Woven Material; The Energiser Top Sock Is From A Combination Of Polyester And Wool With Excellent Perspiration Absorbency ;The Top Sock Has Been Treated With Ultra-Fresh To Impart Hygienic And Anti-Bacterial Properties To The Material; The Sole Is From Double Density Pu/Pu; The Midsole Is From A Low Density Flexible Polyurethane With A Shore Hardness Of 0.45 - 0.5; The Outer Sole Is From Polyurethane With A Shore Hardness Of 0.64 - 0.65; A Shank Reinforcement Is Moulded Into The Midsole For Additional Arch Support; The Sole Can Withstand Temperatures Up To 95 Radius Celsius Radiant And Direct Heat ;The Boot Is Anti-Static;If Required The Boot Can Be Manufactured With An Anti-Penetration-Resistant Midsole;The Steel Toe Cap Can Withstand An Impact Load Of 200 Joules; If Required. The Boot Can Be Manufactured Without A Steel Toe Cap; The Chelsea Boot Has Been Tested To Comply With Sans/Iso 20345 Specific Cations And Carries The Sans/Iso 20345 Certified Mark.