Potbelly Sandwich Shop is running a new promotion where anyone can get a free shake with an entree purchase from Thursday, September 6 through Sunday, September 9, 2018.
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In order to take advantage of the offer, simply say “Free Shake Friday” when placing your order and you’ll score a free shake on the house.
While the offer is open to everyone who says “Free Shake Friday,” Potbelly Perks members will receive the perk in their Potbelly Perks account to use with their entree purchase.
Image – Potbelly