Head-Turners hardhats are designed to allow workers to express their own style, which assists in increased compliance. Two designs are offered which withstand temperature variances, humidity and exposure to UV light for long lasting wear. NightVision design is fully reflective for added protection in low light environments. Both the NightVision and American Flag have four point ratchet suspension fitting head sizes 6-1/2 to 8. Lamba Systems, Inc. 89 Wales Ave. Tonawanda, NY, 14150