The Charles Owen JS1 Pro Jockey Skull is a lightweight and deep fitted jockey skull designed with an impact resistant Acrylonitrile Butadiene Styrene shell and comes with 10 ventilation slots to keep you cool while riding. The leather harness with nylon webbing and a suede padding provides comfort and support under the chin. This riding hat features an impact-resistant ABS outer shell for safety and protection. Without compromising on comfort with ten air vents for great breathability. Luxurious leather harness with reinforced nylon webbing and suede padding under the chin provides great rider security. It meets safety standards: ASTM F1163-15, PAS015:2011, VG1 01-040 2014-12. Please note SEI certified to ASTM F1163-15 only on sizes 54cm to 61cm. Care Instructions: Riding hats are precision made and should be protected from extremes of temperatures. They should be allowed to dry naturally when they get wet and also they must be protected from blows or damage from being dropped. Buying Guide: Read our Horse Riding Hat Buying Guide to understand best shape for you.