I have one of the glass KeepCups, and the seal on the lids only last a few months before allowing leaks through. It doesn't happen if I keep the lid off and allow it to cool down a bit. Most of my use is in the office so it's not the end of the world. But a reusable coffee cup you can't immediately put the lid on and use is a bit shit.
On my second lid (which is leaking) and will likely just get a different cup soon.
Thats a good point though - the review is obviously reviewing brand new cups. Hadn't considered the issue of lid seal getting worse. The Frank Green has been rock solid, it's only the drinking hole which is an issue, it's never leaked and keeps drinks warm for hours.
Do you drink filter/americanos?
I have one of the glass KeepCups, and the seal on the lids only last a few months before allowing leaks through. It doesn't happen if I keep the lid off and allow it to cool down a bit. Most of my use is in the office so it's not the end of the world. But a reusable coffee cup you can't immediately put the lid on and use is a bit shit.
On my second lid (which is leaking) and will likely just get a different cup soon.