Potbelly Sandwich Shop will giving away free shakes with the purchase of any entree at participating locations on Friday, June 29, 2018.
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As previously mentioned, you will have to purchase an entree to get a free shake, but you’ll also have to say “shake it up” to your cashier to seal the deal.
Potbelly Perks Members will receive the “Free Shake Offer” via the Potbelly app on Thursday, June 28 and Friday, June 29 with the purchase of an entree.
Image – Potbelly