Provided is a fabric for producing a foam part, comprising: a non-woven fabric sheet comprising: a first metallic pattern printed on a first surface of the non-woven fabric sheet; wherein the first metallic pattern comprises a plurality of pattern elements having a predetermined optimal distance therebetween; wherein the metallic pattern comprises a print paste and a metallic powder; wherein the non-woven fabric sheet is structured to be positioned in a mold for producing the foam part such that the first metallic pattern of the non-woven fabric sheet is operatively coupled with a magnet element of a first mold half of the mold.