All our cards are made from high-quality, durable papers with a thickness of 300 gsm (grams per square meter). So, you can rest assured that the card you receive will be of excellent quality and make a lasting impression on the recipient. Other materials that go into making thank you and other cards are also of an equally high standard. That said, should you have any concerns about receiving your product, you may contact us, and we will do our best to help you.