? Our thinnest lightest cup for extended wear? Adjustable headband and ProForm? leather ear cushions? Hard hat adaptor fits most hard hats (may not be suitable for wide-brim hard hats)? Hard hat adaptor pivots and locks in the up position? Dielectric construction? Suitable for low to moderate noise environments; wear while sand blasting or using a pressure washer? Simple height adjustment requires no tools to remain fixed during wear? Snap-in ear cushions make replacement quick and easy