The thickness of a business card is measured in GSM, or grams per square metre. GSM varies according to the paper type the card is printed on.

Standard business cards are printed on 400gsm silk. This is much thicker than the 90gsm of regular printer paper, for example.

But you can opt for even thicker cards. These give you a sturdier and more premium feel. So if this is your aim, consider cards with higher GSM.