Day By Day is a lifestyle brand created for the everyday jiu jitsu practitioner. Rooted in the philosophy of persistence and growth, our motto—The Path to Black Belt—symbolizes your journey on and off the mats. Our mark is a reminder to never stop training.

Founded in 2013 as a passion project, Day By Day was born from the vision of two brown belt brothers, AJ and Tim, training in Hawai'i and San Diego. We set out to build a brand that connects practitioners worldwide—one that reflects the dedication, balance, and relentless pursuit of the jiu jitsu lifestyle.

With 30 years of combined experience in the gi, we used our firsthand knowledge to craft a top-of-the-line gi featuring sleek ambigram graphics—launching the foundation of what Day By Day is today.

Join us on The Path to Black Belt—one roll at a time.

 

AJ Mendoza

Lineage: Helio Gracie > Relson Gracie > Ronn Shiraki > AJ Mendoza

Academy: Mano Jiu Jitsu 

Location: Kaneohe, Hawaii 

Current Rank: Black belt

Tim Mendoza

Lineage: Helio Gracie > Royler Gracie > Leticia Ribeiro > Tim Mendoza

Academy: Gracie Humaita South Bay

Location: San Diego, California

Current Rank: Black belt, three degrees