The mask automatically adapts to different face types. The masks have a solid and durable outer structure. The pleated filter structure reduces inhalation resistance by up to 50 % with improved performance. Cleanable. The mask can be worn in several layers. Extra wide, adjustable straps. Flexible clip for more comfort. The masks fulfil the requirements of the dolomite dust test. Reduces breathing resistance over long periods of time. All Moldex products, including packaging, are 100% PVC-free.