Being curious, I've read through the details on the website. It's a cyanoacrylate glue, so there should be something directly equivalent available over here ("Super Glue", I think). In the Q&A, they say it's non-toxic, waterproof, and microwave-safe, but recommend not putting a glued item in a dishwasher. They say it's heat-resistant to about 180F (82C), so I'd be wary of pouring boiling water directly into the glued mug; on the other hand, someone else says they glued their favourite coffee mug and it's been fine. There is some mention of an "Advanced Formula" that is more heat-resistant.