https://www.pacsafe.com/

Like I may have mentioned, I’m a Television Director and travel overseas a lot shooting corporate videos in some seriously remote and exotic places. Today lithium batteries are a huge deal and are not allowed as checked items. Like I said with my crew we travel with 5 or 6 Pelican 1650s but I had to hand carry a smaller Pelican stuffed full of Sony L-Series and NP-Series batteries for cameras and lights etc. The Pelican would fit snuggly in the middle compartment of my Swiss Army backpack. Of all the airports and security checks the only time anyone even remotely had an interest it’s contents was in LAX at about 1am flying in from HK. The guy asked me what was in it, I said batteries, he cracked it open, took a quick coursary look, shut it and welcomed me back. I thought the batteries were going to be a huge pita. BTW, that Swiss Army backpack also serves as my back at home daily carry bag where a Glock 43 lives along with its spare mag. Never had a problem with an explosives wipe down on it yet. All the big Pelican boxes come home with the explosives acceptance stickers on them. I’ll be going back in a month or so. I have my interview for Global Entry in a few weeks, it’s about time I’ve gotten that going.

Less is more when traveling internationally in my opinion. I try to carry as little as possible and as discreetly as possible.

Look at Osprey. No questions asked life time warranty.

I'm thinking about picking up an Ozone 35.

They have fantastic reviews, and fly well below the radar.

I've been using a Timbuk2 medium messenger bag.