Fabric Face Masks: Which Fabrics Should The 3 Layers Of Mask Be Made Of? 0 10.08.2020 13:13 Ndtv.com COVID-19: Fabric face masks should be made of at least three layers of fabric. The middle can act as a filter, the inner layer should be made with hydrophilic material, while the outer layer should be... Партнёры Smi24.net Все новости за 24 часа Музыкальные новости Агрегатор новостей 24СМИ