Arc Flash Full Body Harness: DE 3D, DE MB Chest/Legs, L Offered in a variety of configurations. Designed with our premium aramid ASTM/NFPA approved webbing and Nomex shoulder, waist and leg pads, our Arc Flash harnesses feature either coated, corrosion-resistant dielectric hardware or standard hardware protected with our unique component backer. This durable harness provides superior protection in an arc event situation.