If you have credit in your Gift Voucher Account, you can use it to purchase any item at Koolto.com. At the checkout stage, in the 'Payment Choice' page, a checkbox will appear. By ticking this checkbox you will pay for your purchase using only the credit in your Gift Voucher Account.
Please note, you will still have to select another payment method if there is not enough in your Gift Voucher Account to cover the cost of your purchase. If you have more funds than the total cost of your purchase, the balance will be left in your Gift Voucher Account for future shopping.