Yes, as soon as your HyperJar card is activated, you can transfer funds back to your bank.
To do so, select the Jar you wish to transfer the money from, press Send, and enter the amount. Then, press Send To, and select your linked bank account, before pressing Review payment.
If you’re happy with all the information you’ve entered, confirm and the funds will be sent to your bank account. This can take up to 72 hours, however most instances will be much quicker.