Okay, so if you're after a proper reliable carry-all, this Cabin Zero backpack is seriously a good shout. It’s got a huge 44L capacity, which means it’s perfect for a weekend away or even as your main bag for a quick trip without checking luggage – fits most cabin requirements, apparently. What makes it actually usable is the clever bit: those padded shoulder straps make a massive difference when you're lugging it around, and there’s a dedicated sleeve inside for your laptop, up to a 17-inch screen. Plus, the side compression straps really help to keep everything neat and stop it from bulging out. It’s made from durable polyester, so it’ll definitely stand up to being thrown in and out of overhead lockers. Oh, and for peace of mind, it’s got lockable zippers on the main compartment and even a tracking tag, which is pretty smart if you’re a bit prone to losing things (like me!). And you’ve got handles on both the top and side, so it’s easy to grab no matter how you've stashed it. Basically, it’s a solid, grey, no-fuss backpack that just works, whether you’re heading out for the day or hopping on a flight.