safety harnesses for persons working at heights; protective eyeglasses; safety goggles; eyeglass lenses; safety helmets; optical reflectors; sound alarms; protective industrial boots; life belts; life jackets; safety nets; safety restraints, other than for vehicle seats and sports equipment; safety tarpaulins; waterproof survival suits for the prevention of drowning; safety signals, namely, flashing beacons and flashing lights; face-protection shields; lenses for protective face shields; prot...