The DAX Hard Hat line standard head size is (6 - 8); 52-64cm circumference, ANSI and EN Certified: Meets Z89.1-2014, Type 1, Class C standards and EN 397, Carbon fiber shell is lightweight, full brim design with superior impact resistance, 6-point suspension evenly distributes force for maximum protection and comfort, Clarino Comfort Dome made from synthetic leather with EVA foam for added shock absorption, LUX Retention System has secure, adjustable fit that stays comfortable all day, Oversized ratcheting dial for easy size adjustment, even with gloves on, Moisture-wicking synthetic leather brow pad for better sweat control, Heat rated up to 350F (177C), Imported,