I’ve had my two mugs for a year now. Just had to replace the rubber nipple, but no biggie as I use the every day and there’s liquid in them all day long.
These keep my chai tea hot for at least 6 hours. The temp drops an unnoticeable amount - if the tea it too hot to drink now, it’s still too hot to drink 3 hours later.
Zero leaking. I mean absolutely zero. I lock the lid, toss it wherever, and off I go; no worries.
I’ve just seen that the have a newer version with a flip and fold handle builtin. I bought one.
I just wish the had add on handles, silicone, that could be used on these tumblers. Unfortunately they don’t, and I’ve yet to find any compatible with the lid.
A 10 our of 10.