stringking reusable cloth face mask - protection for kids and adults - usa-made, washable face masks (4 pack - large - black) stringking the stringking 2-ply reusable cloth face mask uses two layers of premium cotton fabric to create a cdc-recommended washable cloth face mask for daily use by kids and adults. the stringking cloth face mask is made in the usa using american-made supima cotton fabric and nylon-elastane elastic string ear loops for a soft, comfortable feel. stringking fabric face masks follow the cdc recommendations for cloth facial coverings to help slow the spread. these face masks are not medical-grade surgical masks or respirators.