Is a 20-inch children's suitcase the same as a 20-inch adult suitcase?

Same. The 20-inch suitcase represents a style and specification of the suitcase. The 20-inch suitcase meets the specifications of 50cm in height * 34cm in width * 23cm in thickness. There is no difference in size between adults and children. Therefore, a 20-inch children's suitcase is the same as a 20-inch adult suitcase. Luggage, also known as suitcase and trolley case. It is a box that is carried to place items when going out. It is one type of luggage. Suitcases are usually used to store clothing, personal care items and souvenirs needed for travel.