... s/s 304 stainless steel,single wall,double wall available ,different kind of lids available. 2.Certificate:BPA free,FDA certificate,LMBG certificate ... ,embossed ) availabe. 5.Sports caps and lids,sippy lid,all kind of lids,above 8 kinds available. 6. Recommend an old fashioned ... etc. OEM/ODMOur R&D team has an average of 15 years of experience and applies it to continually developing new designs ...