"Excellent, but..."
This excellent flask keeps drinks very hot. The 1st time I used it, I primed it with boiling water; the coffee was too hot to drink! The lid clasp is good and leakproof. But the lid thread has prematurely worn, so now I can't tighten the lid without it slipping on the thread - only a matter of a few more uses before I worry about the lid no longer sealing properly on the body. The warranty seems good, but who keeps a receipt for a £12 item? My only choice will be to bin it (shame) buy another one and keep receipt in case that one fails as well. So... 5* for the item as new, 3* after a year.