Uvex® Bionic™ Shield, Polycarbonate, Ratchet SuspensionLightweight and balanced, ergonomic design for extended use Extended chin and top of head protection Enhanced protection from airborne debris Excellent optics and increased visibility Easy to set ratcheting headgear locking mechanism assures comfortable, secure fit Highly adjustable headgear tilts visor nearer or farther from face depending on preference and application Easily replaceable visor with dual position choices Comfortable cell foam on back