They provide high breathing freedom and offer very effective filtration thanks to a special three-layer medical non-woven structure. The mask does not stretch, is smooth and wear-resistant, its outer material and lining is polypropylene non-woven. The special moisture-binding filter layer is made of durable, blown and melted polypropylene fibres - the random, dense distribution of the filter material ensures much better filtration than cotton solutions or regular fleece filters. Convenient behind-the-ear fastenings, comfortable long and flexible nose clip allow the mask to fit perfectly to the face.

When unfolded, they have a width (height) of 15.5/16.5 cm at their widest point, allowing the mask to fit anatomically to the face and cover the mouth and nose very precisely. The slightly larger size of the mask when unfolded also provides greater comfort when breathing. The mask overlaps clearly on the chin, thus minimizing the suction of unfiltered air.