Eurohike
Price: £15.99 Retained temp (deg C): 78
This is the best-value stainless steel flask on test, although it bears more than a passing resemblance to the smaller Aladdin Adventurer. It shares the effective, easy-to-use push-button for pour and seal, but retained one more degree of heat. Again, though, the steel cup and smaller plastic cup became really hot, so better insulation - or handles - would help.