Do not be fooled like I was. These are not 'glasses' in the traditional sense. They are plastic. I bought these for an anniversary present for my sister and was shocked, given the price that they were plastic. Yes it says so in the small print but for over £6 a 'glass' I foolishy assumed they were actually made from glass! They're pretty enough but not worth the price by any stretch - especially when you can get the same quality of outdoor plastic glass for considerably less elsewhere. Suffice to say I returned them.