Dear customer, So sorry but the frame comes with a fixed size and it cannot be customized. We understand that choosing a perfect frame size online can be tough sometimes so we suggest that you could please check this link https://www.firmoo.com/help-p-1.shtml
for reference. Also, we offer 30-Day Exchange&Return: Unsatisfactory glasses can be exchanged or refunded within 30 days of receiving. Only shipping fees will apply. Please feel free to contact us if you need. Have a nice day! Thank you.