3M High Heat Headgear, Snap-Fit, Dielectric 440V, Leather Sweatband, Yellow, G3501M-GU Features 3M™ High Heat Headgear Series G3501 is designed to offer high protection levels for the most demanding applications. It also provides a platform for hearing, eye, and face protection products, designed for compatibility in metalworking environments, without compromising comfort or ease of use.