You have to go to your local Wendy's for this one. It's not listed on their site. Buy a "Chills Get Thrills" coupon book for one dollar. The book has 10 coupons for 10 free 6 ounce frosties. No other purchase necessary. Coupons are good from 11/01/13 to 01/01/14. All proceeds go to the Dave Thomas Foundation For Adoption.