3M™ X5-6PTSUS Replacement 6 Point Suspension for SecureFit™ Safety Helmet X5000

3M Pressure Diffusion Technology. Fits 3M SecureFit™ Safety Helmet series X5000 and X5500. 3M™ SecureFit™ X5000 Safety Helmet Pressure Diffusion Ratchet Suspension fits hat sizes 6-1/4 to 7-7/8 inches (50 to 63 cm) head circumference.