Breathing mask having at least one fastening strap and a breathing filter, the breathing filter having three layers, in particular a three-layer structure, characterized in that two outer layers are each formed by a fleece and a middle layer arranged between them is formed from a fleece, the larger one Thickness than the thickness of one or both outer layers and wherein a plurality of material weakenings is arranged in the fleece of the middle layer, at which the thickness of the fleece is reduced by at least 50%, in particular at least 70%.
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