It’s a decent cup, but
"It’s a decent cup, but not perfect by any means. The coating inside is good, no added flavours so far. The texture of the cup is quite nice as well, it is easy to hold. It is not leakproof unless you tighten everything to the absolute max, and even then there is some play in the closure of the lead that will allow the content to spill if held upside down. The lead traps odours and requires deep cleaning more often than I would’ve liked. Overall descent. I’ll keep the one I have, but I wouldn’t rush to get another one."