Name Dyna Head  The all time original best seller! The only headgear tested for extra protection and safety. A must have for semi contact sparring. (Results compared the Dyna Head to a cycling helmet). NEW LOWER PRICE "MACHO" - first for safety to give you peace of mind during sparring sessions. Size Circumference (cm) S  49.2 - 52 M  53.5 - 56 L  57 - 58.5 XL  59.5 - 61 £28.95