When it comes to choosing the right size suitcase, it's important to measure your suitcase accurately. You'll need to know the length, breadth, and height of your suitcase in order to make sure it will fit in the overhead bin or under the seat on your flight. To measure the length of your suitcase, stand it up on its end and measure from the top of the suitcase to the bottom. For the breadth, lay your suitcase flat on the ground and measure from the left side to the right side. Finally, to measure the height, stand your suitcase up on its end again and measure from the bottom of the suitcase to the top. Once you have these measurements, you can compare them to the size restrictions for the overhead bin or under-seat storage on your flight. This will help you to choose the right size suitcase for your trip. In addition to the length, breadth, and height, you should also consider the weight of your suitcase. Most airlines have a weight limit for carry-on and checked baggage. So, it's important to make sure your suitcase doesn't exceed the weight limit. By following these tips, you can choose the right size suitcase for your trip and avoid any problems at the airport.