The Pupillary Distance (the distance between your pupils) is crucial for us to make you the perfect pair of Prescription SunGods.

There are 2 ways you can get this:

• Have your optician check this measurement and give you the PD number

• Measure yourself at home, you can do this using a free app called GlassesOn - you'll only need your mobile and a magnetic card (like a debit/credit card or drivers licence, for example). If you're an Apple user, you can download the app here, if you're on Android, you can download the app here. The app will guide you through the process. Simply screenshot the result and send it to us.

• Alternatively, we can process this for you by directly sending an image to us with the instructions below:

Please send us an image of your face with a credit card-sized card flat against your forehead, at arm's length level with your eyes, and in a well-lit room.

Once we have received this from you, we will be able to send your Prescription off for manufacturing right away.