3M SecureFit Safety Helmet, X5004VX-ANSI, Green, vented

Suspension system incorporates exclusive patented Pressure Diffusion Technology. Works with a variety of 3M faceshields, earmuffs, and other accessories. Meets ANSI Z89.1. Climbing helmet-inspired design. Customize your fit with multiple levels of vertical adjustment. Vents on sides and back are designed to allow airflow through the hard hat