On the website DMDHELMET.US are accepted Visa, Visa Electron, Mastercard via Paypal website becuse it is the safest way to transfer financial data.
Paypal hides your credit card details so you do not have to share them on line.

Why might my credit card be refused?

Your credit card may be refused for any of the following reasons:

  1. The card may have expired. Check that your card is still valid.
  2. You may have reached your credit limit. Contact your bank to check that you have not exceeded the authorized purchase limit.
  3. You may have entered some information incorrectly. Check that you have filled in all the required

Is it safe to use my credit card on the website?

DMD America does not have access to any of its customer’s financial or credit cards details. PayPal is solely responsible for the security of your information through their system. Please contact PayPal, or visit their website at for information about their services, security, privacy and other policies.