The locking top is not even necessary because it holds liquid so well. The top has a magnetic open that keeps it from closing on your nose. You place the opening where you want it to open and twist on the cap clockwise one full rotation.

Leak proof so it does as advertise. Top notch products. Works as advertised.

This brumate checks all the boxes. Sophisticated and streamlined design. Handle is sturdy and its leak proof!

Bottom was glued on crooked. The lid is really hard to open. It seems difficult to impossible to screw the lid on.

After 6 weeks of daily use, the lid is still so tight that even with a plastic mat used to remove lids, i hurt my hand on a regular basis straining to remove the lid. Now i have to wait two weeks before the yeti cup shows up so i can replace this cup....  Read More

Doesn’t hold ice for the day and condensates really bad. Will not keep coffe warm. Which is weird because i have the same cup in a different pattern and it holds ice well and doesn't condensate and get everything wet.