This is an amazing bag. Its roomy, holds up well and the security features definitely give you peace of mind. The drink areas will hold a 16.9 oz water bottle with no problem. For those who complain that the mesh area where the water bottle holder is gets caught in the zipper - yes, if you don't collapse the area it will get caught in the zipper. Its meant to be collapsed in when not in use. Common sense. I spilled water on it and it wiped right off and didn't soak through.  I would buy this bag again in a heartbeat. Its my new travel purse.