Online payment can be made via:

PAYPAL
PayPal is used exclusively for online purchases. With a PayPal account you can choose to pay with your credit card, bank account or PayPal account balance on any purchase. If you choose this mode of payment, at the end of the order choose "PayPal" and click on the "Finish order" button. You will be redirected to the PayPal page where you must authenticate and validate the payment. You will then return to the Cotton Brothers payment page to complete the purchase.
Note - All online transactions are completed in Euro.  
VISA or MasterCard credit card

Credit card (VISA or MasterCard) is a secure method of payment through the internet.
If you choose this mode of payment, at the end of the order - "Payment process" - choose the "Credit card" option and click the "Finish order" button. At this moment you will need to fill in the following data to effect the payment:
Credit Card Number * (16 digits)
Security Code (3 digits)
Validity Month / Year (4 digits in the year and 2 digits in the month, you can not enter "-")
Example: credit card validity: February 2014. Then you must put in the validity: 201402
Orders are subject to verification and acceptance prior to shipment of the order. The charge of the credit card is thus made at the time of shipment and before receiving the order. We are not responsible for any typographical error.
Note - All online transactions are completed in Euro.
* For security reasons do not include your credit card number in communications via email.

ATM
Payment by Multibanco is exclusive in Portugal and is the most used system currently.
If you choose this mode of payment, at the end of the order - "Payment process" - choose the option "ATM" and click the "Finish order" button.
You will be redirected to a page with the necessary data to make a payment: the entity, the reference and the amount. This data is provided to the user who can make the payment in any ATM box, by homebanking or telebanking. All operations and transactions are carried out through SIBS and Banco de Portugal.

MB WAY 

MB WAY is an application that dematerializes the bank cards and allows to make purchases, indicating only the mobile phone number, the consumer never shares the data of their real cards.