The best size of luggage for traveling depends on various factors such as the duration of the trip, the mode of transportation, and personal preferences.

However, here are some general guidelines to help you choose the right size of luggage for your travels:
- Carry-on luggage: If you’re traveling for a short trip or want to avoid checked luggage fees, a carry-on bag is a good option. Most airlines allow carry-on luggage with dimensions of around 22 x 14 x 9 inches or 56 x 36 x 23 centimeters. This size can accommodate enough clothing for a few days and some essential items.
- Checked luggage: If you’re traveling for a longer duration or carrying bulky items, checked luggage is a better option. Most airlines allow checked luggage with dimensions of around 62 inches or 158 centimeters (length + width + height). However, some airlines may have specific weight restrictions, so it’s essential to check with your airline before packing.
- Personal item: In addition to your carry-on or checked luggage, most airlines allow a personal item like a purse, backpack, or laptop bag. The size of this item depends on the airline, but generally, it should fit under the seat in front of you.
- Travel backpack: If you plan to backpack or move around frequently during your travels, a travel backpack is an excellent option. The size of a travel backpack varies, but most can hold around 30-50 liters of belongings.