Made of high quality leather. Air foam padding provides maximum comfort and protection. Adjustable straps on the top of the head, back of the head and under the chin for a firm and secure fit. Soft non-slip HI-TEC Japanese AMARA lining. IBA (formerly AIBA) approved.  Size table:   S M L XL Head circumference 52 - 55 cm 55 - 58 cm 58 - 61 cm od 61 cm