• The Thermal Helmet Liner SureFit™ is fully approved for use with all JSP Evolution® safety helmets. • It prevents workers from wearing incompatible and dangerous alternatives under the helmet, such as hooded sweatshirts. • It provides all-day comfort and warmth. • Thermal insulation - The Thermal Helmet Liner SureFit™ offers the wearer warmth and protection from cold environments. • The deep edges are designed to cover the entire ear. • Fully compatible - The Thermal Helmet Liner SureFit™ is compatible with all JSP safety helmets. • The flexible material provides a pleasant snug fit for minimal obstructions and maximum comfort and warmth. • Comfortable and hygienic - The Thermal Helmet Liner SureFit™ is lightweight for all-day comfort and can be machine washed at 30°C for hygiene reasons.