Our Baby Quoddle Glass Baby Bottles are made of hand blown glass that is thermal, shock resistant, and dishwasher safe with etched logo and measurement lines. The nipples and caps on these bottles are formed out of natural hevea rubber. As a result, these bottles are beautiful, practical, earth-friendly, and free of toxins for peace of mind for conscious parents. We carry these elegant glass bottles in 6oz and 10oz sizes. Package includes two (2) 10oz Glass Baby Bottles, two (2) rubber nipple caps in the flow of your choice, and two (2) flat rubber caps. Gift as a birthday, baby shower, or holiday present for any baby or expecting mother. Baby Quoddle nipple cap flow options are newborn and medium flow.