A bag or suitcase used for travel, for carrying clothes and personal items.
旅行かばんに着替えを全部詰めた。
I packed all my change of clothes into my travel bag.
空港で旅行かばんを預けて、身軽に手荷物だけで移動した。
I checked my travel bag at the airport and moved around lightly with only carry-on luggage.
小さな旅行かばんは機内持ち込みに便利だ。
A small travel bag is convenient for carry-on.