Grey belts are traditionally part of the youth belt system (under 16), used to track early progress. They’re not part of the standard adult rank levels.
FAQ's
Yes—some academies use it for beginner placement or as a decorative rank. However, the IBJJF recognizes only adult belts (white, blue, purple, brown, black).
Grey belts often remain in that rank until they transition to youth yellow, usually before turning 16. At 16, they may move into blue belt or start adult white, depending on skill and academy policies.
Wash it gently in cold water and let it air-dry. This keeps the color crisp and fabric in good shape—just like your gi.