Wendy’s Frosty lovers, rejoice. Beginning next year, anyone who enjoys the frozen treat can do so for free, for a one-time payment of just $2.

The $2 key tag purchase guarantees a Frosty with every purchase as well as the knowledge that every 90 cents on the dollar will go toward the Dave Thomas Foundation, the not-for-profit created by the chain’s founder, to help find forever homes for children in foster care.

Chain officials say the key tags can be purchased at most Wendy’s location, but they are also available for purchase on the foundation website.