Massive 44 Litre Travel Hand Luggage 22x14x9 - Perfectly Sized for Southwest Airlines and More! The Metz backpack is the most popular in the Cabin Max collection. The classic exterior design comes in over 30 different colour variations and patterns, so we are confident that you will find one to suit your style and personality. Measuring just 22x14x9", the Metz rucksack is perfectly sized for the hand luggage restrictions of the most popular budget airlines - such as American Airlines, Southwest Airlines and United Airlines to name a few. It's ultra lightweight at just 660 grams which means that you can pack your hand luggage to the MAX and avoid paying those extra check-in baggage costs.