Pressure Diffusion Technology incorporates self-adjusting front paddles along forehead. Suspension sits low on the head to increase comfort and security. Vented. Cap style. Smooth-turning 4-point ratchet suspension system. Customizable fit with multiple levels of height and head-shape adjustments. Includes breathable, washable sweatband. Meets ANSI Z89.1 Type I, Class C requirements. Fits hats sizes 6-1/4 to 8 (50 to 64 cm head circumference). White.