Free Doritos with the purchase of a Potbelly Sandwich from 12/9-12/15

Must add sandwich and promotional 1.75 oz Doritos chips menu item to cart for offer to apply. Does not apply to Potbelly “meal deals”, pick-a-pair or kids sandwiches. For one-time use only at participating Potbelly locations for users who place an order via grubhub.com or the Grubhub app. Offer expires at 11:59pm CST on 12/15/19. To redeem, add promotional menu item on restaurant page via the Grubhub app. Eligible items only. Available while supplies last. Limited substitution and customization options available. Only valid for personal (non-corporate) accounts. Cannot be combined with cash or certain other discounts. Grubhub and Potbelly reserve the right to cancel, suspend and/or modify the offer, or any part of it, for any reason at any time, including, without limitation, if any fraud or technical failure impairs the integrity or proper functioning of the offer.