Suitable for almost all Riding Clubs*, the NRG helmet has a smooth, matte effect outer and is available in Navy or Black with a breathable coolmax lining which is removeable and machine washable. The helmet inner shell is made from an EPS foam which is a hard foam designed to absorb shock whilst offering protection, the helmet is tested to SEI ASTM F1163-15 and VG1 standard. Available in four shell sizes, the NRG features a Dial-To-Fit system which allows the user to finely tune the fit of their helmet! The NRG helmet features 2 large front vents which have silver sparkles Sizes XS: 48-52cm S: 52-56cm M: 57-60cm L: 58-62cm * Approved for the following Riding Discipline British Dressage | British Eventing | British Riding Club | British Horse Society | British Show Jumping | Endurange GB | The Pony Club | Riding for the Disabled | Showing Council | Trec GB | UK Polocrosse Association Information taken from the British Equestrian Trade Association Website