Every detail counts where safety and style are concerned and the Karben Sienna riding hat will not let you down. Tested to BSI standards and certified to PAS15:2011 with a flexible peak and bespoke micro-adjusted dial fit the hat feels lightweight and secure. Chrome accents frame a central vented panel with a tough carbon finish. FINER DETAIL: Low profile form. Smooth, lightweight outer shell. Neat and flattering flexible peak. BESPOKE FIT micro-adjustable dial system. MAXIMUM COOLING EFFECT front and rear air vents. THERMOREGULATING 3D mesh liner. CoolDryTM headband. Expanded polystyrene inner shell with ventilation holes. Fully adjustable 4-point harness with leather look side panels. Quick release harness buckle. Removable anti-rub chin guard. Machine washable removable inner linings. PAS 015:2011 and BSI KITEMARK.