Seoul has two useful subway-based luggage options. T-Locker is the network of unmanned lockers across Seoul Metro stations; T-Luggage is staffed storage and delivery at selected major stations. Seoul currently lists 5,557 T-Locker lockers across 273 stations. Base four-hour weekday prices are KRW 2,200 small, KRW 3,300 medium and KRW 4,400 large; weekend and holiday base rates are higher. Listed locker hours are 05:00-24:00, and storage or retrieval is unavailable outside those hours. T-Luggage serves major points including Seoul Station, Hongik University, Jamsil, Myeong-dong, Gimpo International Airport and Jongno 3-ga. The official page lists staffed service as 09:00-22:00 and separate storage/delivery fees by bag size and day. Use lockers for short self-service storage; compare T-Luggage when you want staffed handling or same-day transfer. Check station availability and service hours on the day of use.