Good info. Thanks guys. I just did a search and it turns out that TSA uses 100ml as the standard of measure. And 100 ml = 3.38140226 US fluid ounces. So 3.4 oz is supposed to be allowed.
www.nwa.com/features/advisory.html wrote:
Effective November 10, 2006, the TSA has advised that travelers may now carry through security checkpoints travel-size toiletries (3.4 ounces/100 ml or less) that fit comfortably in ONE, QUART-SIZE, clear plastic re-sealable bag.
I'll see what happens, it's only about 25% full, so I if I lose it, I won't be out more than $10. I'd hate to lose a full bottle. I can always buy a new one in CR (smaller one).
Is cologne expensive in CR? Polo Sport, for example. The 2.5 oz bottle is about $30 here.