With inner adjustable harness for secure fit over prolonged periods of use. Visor compliant with Optical Class: 1 (highest). HDPE shell and LDPE polyharness. High impact polystyrene ear defenders with PVC-covered open cell foam pad inserts, PVC flexible coupling and nylon arms and fittings. Nylon visor with nickel plated brass press studs. Polycarbonate shield with aluminium edging. One size fits all. Specifications: EN 397.