3 If you purchased the 10kg Check-In Bag (up to 10kg with maximum dimensions of 55cm x 40cm x 20cm) you may carry your small bag on board the aircraft, however the 10kg Check-In Bag must be deposited at the bag-drop desk prior to entering security.

While the weight of a 10kg check-in bag is strictly capped, the physical dimensions are often governed by the airline's standard "checked luggage" size limits rather than a specific "small" box size. For most major airlines like Ryanair, easyJet, or British Airways, the maximum combined dimensions (Length + Width + Height) for a checked bag typically shouldn't exceed 158cm (62 inches). However, since 10kg is a relatively light weight for a checked bag, you will likely be using a "cabin-sized" suitcase, which usually measures around 55cm x 40cm x 20cm. The danger of using a very large suitcase for only 10kg of items is that the contents may shift and become damaged during transit, and the bag itself might be more prone to being crushed under heavier luggage. If you have purchased a "10kg Check-in" specific fare (common on budget carriers), they usually expect the bag to be roughly the size of a standard carry-on. Always check the specific "contract of carriage" for your airline, as some low-cost carriers have specific size requirements for their 10kg tier to ensure the bags fit on certain conveyor belts or in specific sections of the hold.