Packing for a flight on a budget airline can be anxiety-inducing, as the baggage requirements seem to change all the time. It's important to check for the latest luggage rules before you fly, so you can ensure you aren't forced to pay additional fees at the gate. However, some holidaymakers might not realise that there is more to luggage regulations than just the size and weight of your case. One particular type of bag, beloved by those who like to take lots of gadgets overseas, can not be