EZ air powered, air purifying Tyvek hooded respirators from Allegro provide respiratory, eye and face protection to industrial & healthcare workers. They include a Saran-coated Tyvek hood, breathing tube, blower, battery, waist belt, charger, flow tester and HEPA filter. These units are motorised, Lithium-ion battery operated systems that ensure a constant supply of fresh & filtered air over the user's face. They create an optimal protective pressure (at an APF level of 25) inside the respirator head top, while keeping away particulates.