multi-patent products with IPR protection,absolutely BPA -free,unique innovation and safety baby milk bottle designed for long term storage.inner bottle made of borosilicate glass with 3mm thick, non-toxic and safety,outer bottle made of PC and PP with eco-friendly enviormental material,silicone nipple,perfect combination.with bottom hole,balance air pressure,avoid deflating or shriveling silicone nipple,softly suck feel like as breastfeed. handle with 360 degree rotation,convenient for baby to play with hands,develop intelligence.no leak breastmilk while overturn,perfect connection between nipple and inner part of cap.double insulation,excellent keep warm about 2 hours.no broken glass baby milk bottle within below 1.5m height in any angle.warning notice under 42 centigrade degree,various color cards you are available.protects breastmilk from moisture and air while retainning its beneficial properties.measurements(oz and millimeters) display according your requirements,easy to read volume marks.various colors and type you are available. 48pcs/ctn means:71*28.5*45cm N.W:12kg G.W:13kg