The Elipse Half-Mask P3 R Nuisance Odour respirator combines a particulate filter with an activated carbon cloth to provide a minimum 99.95% filtration against odours, dust, all types of fumes, oil and water mists and micro-organisms. It is designed to fit under most welding helmets and welding masks. It is perfect for everyday use from DIY and commercial construction through to the more demanding environments of metalworking, welding and stonemasonry.