Dunkin is celebrating National Coffee Day by offering a free medium hot or iced coffee with any purchase for Dunkin Rewards members on September 29. Additionally, Dunkin has partnered with Little Words Project to release a collection of bracelets adorned with phrases that epitomize fans love for Dunkin. The bracelets will be available for purchase on the Little Words Project website starting at 8 a.m. ET on September 29 for $30 each, and there are limited quantities available. The Little Words Project mission resonates deeply with the spirit of Dunkin’ as it is founded on the principles of uplifting its wearers and bringing joy. The deal excludes Espresso Beverages, Cold Brew, Nitro Cold Brew, and gift card purchases. If you are not a Dunkin Rewards member, you can sign up for free to take advantage of the offer and earn points for free food and beverages. Dunkin is also continuing its “Free Coffee Mondays” promotion through the end of October, where customers can grab a free medium hot or iced coffee with any purchase each Monday in September and October.