3M(TM) Non-Vented Hard Hat With Ratchet Adjustment 91297-80025T. The Pro Ratchet XLR8 White Hard Hats Feature A 4-Point Ratchet Adjustment Suspension For One Hand Adjustment And A Comfortable Pillow Padded Brow Pad For Extra Comfort. Meets ANSI Z89.1, Class C, E And G And CSA Z94.1 Type I.