Best for staying hot
Best price: £9.99 (Halfords.com)
Capacity: 330ml
Diameter of base: 67mm
For: Best performer for keeping drinks hot; watertight; compact
Against: No easy-drink mechanism – you have to remove the lid completely to take a sip
Overall::
Performance: 
Easily the best cup we tested for keeping our drink warm – after a couple of hours the temperature was still a piping-hot 72C. The Lifeventure cup was also completely watertight, so it can be carried around in a bag.
Ease of operation: 
The biggest drawback of the Lifeventure is that you need to remove the lid completely to take a swig.
Buying: 
A tenner isn’t bad considering that pricier cups didn’t perform anywhere near as well in our temperature test.
Quality: 
Has a classy metal case and the Lifeventure’s screw lid also forms a tight seal, which didn’t leak in our tests. It’s compact, too.
Special features: 
Available in nine colours.