I'm in the office in Stockport today and the mrs made me a brew before I left at 8 am and put it in one of these babies

https://retail.smashproducts.com/uk/products/stainless-steel-leak-proof-travel-cup-350ml-black/

Its just gone ten bells and the Tea is still red fucking hot ..

I appreciate i'm like a million miles behing everyone else here but i've never used a cup like this before ..