Terms & Conditions of yellow only INTERSPORT vouchers €20 and €100 vouchers These vouchers are exclusively accepted at INTERSPORT stores in Greece. The amount each voucher corresponds to can only be used according to the above instructions and cannot be exchanged for cash or other vouchers. Vouchers will not be replaced in case of loss or theft. Vouchers will not be accepted after their expiration date or replaced by other vouchers. Vouchers are valid for three months from the date of issuance.