Hi! New to the page… Bit of a different question to the group,

I work in a factory making door trims and stair rods, the building is hella old and cold all year round, especially this time a year it sees a dip approx 4–5 degrees colder than outside..

I like to have a coffee at my bench but the cups I have used being “contigo” constant £20 have pretty much kept the coffee hot for approx 2 hours in this temperature below 0.

Can anyone recommend a better cup (spill proof) for under £40?

Thanks again!