The Charles Owen Pro II Plus Skull Hat is the only triple-standard, precision-fitting cross-country skull cap that can take a removable liner, which allows for a close and customised fit. This liner can be removed for washing, to keep your head feeling fresh and cool. This hat has been designed with front and rear ventilation slots for superior cooling and a GRpx technology harness for unsurpassed stability. The offset ventilation holes also help to prevent horse studs penetrating through the helmet in case of a fall. Lightweight but highly protective,Charles Owen helmets are constructed to remain in place while riding and in the event of a fall. The Pro II Plus grips the occipital bone, which is located at the base of the skull, so that it cannot shift and alter the area of protection offered. Safety Standards: Kitemarked to PAS015:2011, Kitemarked to VG1 01.040 2014-12 and Certified by SEI to ASTM F1163-15. Riding Hats are non returnable.