? 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