1.top sheet:soft non woven fabrics,breathable and confortable 2.Size: 17.5 x9.5cm,14.5x9.5cm,12.5x9.5cm Non-woven face mask(3ply ear-loop)1.top sheet:soft non woven fabrics,breathable and confortable2.Size: 17.5 x9.5cm,14.5x9.5cm,12.5x9.5cm3.Gram(material): our general is 18+20+25g,18+22+25g,20+20+25g,25+25+25g etc(mostly according to our customer requirement)4.Filter rate:≥90% 95% or 99% (we have NELSON test report)5.Color: white/blue/green/red/pink/yellow etc6.Pattern: elastic earloop & tie-on bands,1ply/2ply/3ply/4ply are both available.