Plug really is leak-proof2. It's not hard to make sure it's on right and failure to do that is user, not product error (i'm sometimes in a big hurry and goof up, but that's par for the course) the lids clean easily and seal well, and i don't think you...  Read More

Lid works upside down really nicely as a sipper cup. Brute kitchens products allow me to drink from glass(see health benefits of drinking from glass) without worrying about breaking the glass, or spilling my coffee, or burning myself.

The lids & the corks seal securely. Tight seal around the rim of the jar.

The stopper is snug, they stay on for vigorous mix-by-shaking. For reference, the drink in the video is a thin-ish fruit smoothie, about the consistency of heavy cream. I add a fizz stick which is a powdered drink mix to my first water of the day and ...  Read More

They fit both our preferred boba straws and even the massive ones that i ordered without realizing how giant they were. I also like the plug for sealing the hole and the size of the hole is big enough that my large diameter straws fit with no problem....  Read More