RB/TB 40 range. Anti-UV treated HD PE shell. Maximum comfort: head circumference with front trim 37 cm to absorb perspiration and guarantee a better level of comfort. Harness with 6 anchor points. Textile cover: adjustment by notched wheel. Tightening using a toothed rack and pinion wheel without disengagement is very quick and provides excellent support even with the head tilted thanks to the very low support on the neck (adjustable from 53 to 61 cm). Protection against the projection of molten metal (MM). Traceability: manufacturing date and batch identification mentioned under the visor. Longevity: our helmets have a lifespan of 5 years. We always ship our helmets with a manufacturing date of less than 6 months. Weight: 370g. Same color/packaging.