10 hard kombucha brands have banded together to commemorate World Kombucha Day on February 21, according to a press release.

Boochcraft, Flying Embers Hard Kombucha, Jiant Hard Kombucha, Kombrewcha, Kyla Hard Kombucha, Local Roots Kombucha, Luna Bay Booch, Nova Easy Kombucha, Strainge Beast Hard Kombucha, and Wild Tonic Jun Kombucha have aligned to celebrate this “dynamic” category while spreading awareness for hard kombucha, which is made through an extra round of fermentation.

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From February 18-February 21, US-based fans aged 21+ can enter social giveaways hosted on each individual brand’s respective social channels. Each brand will select one winner who will receive brand-specific goodies, and all entrants will have a chance to win a collective grand prize from all 10 brands, comprising swag, apparel, glassware, and gift cards.

Check out the brands at@boochcraft,@flyingembersbrew,@jiantkombucha,@kombrewcha,@kylakombucha,@localrootskombucha,@lunabaybooch,@nova_kombucha,@straingebeast, and@drinkwildtonic, and follow along using #WorldKombuchaDay and #HardKombucha.