Leather liner is used inside the helmet. Front to back:- 9 inches (23 cm). Ear to Ear:- 8 inches (19 cm). Circumference:- 26 inches (67 cm). Sheet Thickness:- 16 Gauge. Size:- Standard size, fits almost all adults. (Medieval Crafter) Are One Of The Big Collectors Of Medieval Replica’s Products From India. These Are Available In Various Designs That Cater To The Different Requirements Of Our Clients. Our Goal Is To Be The Irreplaceable Leader In The Supplying Of Nautical Products. We Believe That Client Satisfaction Is The Basic factor Which Determines The Success Of Any Business. Therefore, In Order To Satisfy Our Clients, We Provide The Highest Quality Products Along With Excellent Customization Facilities. Return Will Be Accepted Within 30 Days Only. We Understand That You Want Your Product To Reach You In Its Best Condition, Thus The Products Would Be Packed Properly In A Tamper Proof Packing Material That Protects The Product From Being Damaged Or Soiled Or Any Other Damages. We Will Do Everything Possible To Please You And Bring A Smile On Your Pretty Face. We Believe That All Disputes Can Be Settled By Proper Communication. So Please Communicate For Faster Resolution. Please Visit Our Store & Check More Beautiful Items. Have a Nice Day! You Ask We Answer.