Bought this because the outside seemed like it would hold up to getting bumped around if I ever checked it which it did (awesome) but Im disappointed the zipper split during my first travel with it. Thankfully it zipped back up after I got it off the carousel but the thought of my belongings spewing out frightens me. Also sad it doesnt have a lock but thats my fault for not looking at the description before purchasing. This is also a popular bag so make sure you get a personal tag for it!