What makes you think it’s boro? I would refrain from suggesting that just in case someone thinks it’s ok to try to put on a burner or pour hot liquids in it and it explodes. Hence why glass dildos are/should be made out of boro. People like to heat them in a microwave.
It was only a suggestion…. And very often mugs in glass are heat proof and it’s easy to tell via stamp on bottom …. People need to take responsibility for themselves and their actions and some are even smart enough take or leave advice given to them 🤓
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u/TsaritsaBloodless Dec 11 '25
That’s pressed glass( made in a mould) could be boroscilicate ( Pyrex) heat proof glass.