Climbing Helmet, ANSI Classification Type 1, Class C, Head Protection Style Climbing, Head Protection Suspension Type Ratchet (4-Point), Head Protection Color Yellow, Head Protection Graphics No Graphics, Head Protection Material ABS, Polycarbonate, Accessory Mounting Options Side-Slots, Head Protection Venting Yes, Reverse Donning Yes, High-Visibility No, Compatible Suspension Manufacturer Part Number C10RATCHET, Standards ANSI Z89.1-2009, Series CEN10