Bos. & Co. vouchers are used as a payment method.
They always have a value associated to it from either a return or as a form of compensation created under special circumstances by us. If you have received your Bos. & Co. voucher via email, you can use it at the checkout page as a payment method.
Vouchers are usually associated to the original order, so they can only be used through the customer account used to place the original order. Vouchers expire after six months.