"Picnic cups" star star_border star_border star_border star_border I bought 6 of these 2 months ago and already 2 have cracked from the bottom showering me with hot tea. BEWARE - could cause scalding!!! support_agent A note from the team Thankyou for letting us know about the faulty melamine mugs. The mugs are suitable for hot drinks and for the dishwasher (top shelf only). Thankyou for chatting to us on the phone about what happened.