2024 Fluff Festival - Somerville Over the Rainbow, No Place Like Fluff! Join for a full day of Fluff fun on Saturday, September 21st (rain date 9/22) from 2-6pm. Bow Market will be activated with Fluff-tastic activities, food & drink specials, and more!

What the Fluff? A Tribute to Union Square Innovation is a madcap festival honoring the invention of Marshmallow Fluff, returning for its 19th year to the delight of Fluff enthusiasts from Greater Boston and beyond.

It celebrates Somerville’s proud tradition of innovation with live music, fluffalicious feasts, sticky games, zany happenings, and much more.

What the Fluff? A Tribute to Union Square Innovation is presented by  Union Square Main Streets and the Somerville Arts Council.