We provide a wallet card which is on the bottom part of the certificate.

For a more durable wallet card print using a heavier stock paper. We print and send certificates on 60 lb paper. 
To increase durability some people have their wallet card laminated.
Lamination is offered by local retailers such as: Staples, FedEx, UPS Stores, Office Depot, OfficeMax, etc.
You can also do inexpensive lamination at home: