Wendy’s Frosty lovers, rejoice.

There's a way to snag unlimited "free" Frosty treats from Wendy's all year.

But how?

All you need to do is buy a $2 Frosty key tag. Every time you make a Wendy's purchase in 2017, you will be given a complimentary Frosty.

Wendy’s officials say 90 percent from the $2 Frosty promotion will be donated to the Dave Thomas Foundation, a not-for-profit charity 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.