Agreed. My kids may be too rough on them for glass, so I may tend towards stainless steel. However, this article shows a nice range of options: http://ecowat

Agreed. My kids may be too rough on them for glass, so I may tend towards stainless steel. However, this article shows a nice range of options: http://ecowatch.com/2014/03/13/non-toxic-bpa-free-bottles/ http://ecowatch.com/2014/03/13/non-toxic-bpa-free-bottles/