Lost property that is found at the Arena gets picked up every Wednesday and is transported to:
Suomen löytötavarapiste - Lost Property Office, Narinkka 3 (Kamppi), 00110 Helsinki.
Inquiries by telephone: 0600 04401 (1,67 € / min + date)
Mon-Fri 8 a.m. - 9 p.m.
Sat 9 a.m. - 6 p.m.
Sun 12 noon - 6 p.m.