Trek Pivot タンブラー

The two lid pieces are the whole reason I bought this and they don't disappoint. Swapping from the straw to the chug top takes about two seconds, and neither one has leaked in my bag yet.

Kept this in my bag all day and not a single drop leaked, even tipped sideways. The two lid pieces are the real win though, I use the chug one at the gym and switch to the straw for my desk.

Swapping between the straw and chug lids takes about two seconds, which is handy since I use the straw at my desk and the chug top at the gym. No leaks in my bag so far either.