... .3) MaterialImported s/s 304 stainless steel, single wall, double wall available, different kind of lids available.4) CertificatesBPA ... by extrusion, seamless body, polished surface,various colors for body.Customer logo printing(silk screen/heat transfer,engraving, ... available/Product view:Factory View: China factory Wholesale 2013 new 350mL stainless steel sports Bottle for Children with sipper cap