Takeaway coffee cup? Travel cup? Coffee to go cup? Reuseable cup? Anyway, these are class. By Elephant Box who always make a high quality product (see their washing up bowls here).
It’s made from stainless steel and has a very nice cork, removable sleeve for insulation and grip. The cup and lid are dishwasher safe. See pics – the lid stopper is totally removable for washing too. It’s 10cm tall with an 8cm diameter. Holds 350ml.
Ethically produced and infinitely recyclable BTW.