I bought mine last week, it has taken a while to organise it for the kit I will be taking to the USA later this year. I will be carrying an iPad Pro with Magic Keyboard rather than a laptop so won’t take up quite as much space or depth as a laptop. I also have an AguaX waterproof sling bag but it just isn’t big enough for travels, ok for day trips though. I don’t have any issue with my zips sticking, I would suggest pulling them from the actual zip puller and not the extended tab.