The product shall be sterilized by EO strictly in accordance with the hygiene standards. It shall reach the \"medical grade\" standard and be outfitted with portable self-sealing anti-bacteria packaging. The inner packaging shall be independent anti-bacteria packaging. 8K breathable micro hole, free breathing, breathable not stuffy. Selected imported SAP, five layers of fine suction lock, 12 hours of long-term water lock. Three-dimensional narrow crotch cutting, cloud hole wide edge U - shaped design.