• fully approved to be worn with all JSP EVO® Safety Helmets • it prevents workers from wearing incompatible and dangerous alternatives such as hoodies underneath their helmets • the SureFit™ Thermal Helmet Liner provides the wearer with warmth and protection from cold environments • the deep edges are designed to cover the entire ear • the stretchy material it is suitable for all head sizes and provides a nice tight fit for minimal interference and maximum comfort and warmth • the SureFit™ Thermal Helmet Liner is lightweight for all day comfort and is also machine washable at 30°C for hygiene purposes