Celtic's 2001/02 home shirt sits at a quiet turning point, early enough to carry the visual excess of 1990s kit design, yet restrained enough to feel like a reset. Produced by Umbro, who shaped much of the club's modern wardrobe, it revisits the vertical green and white hoops that have defined Celtic since 1903. No reinvention, no unnecessary embellishment, just a considered take on one of football's most recognisable patterns. For collectors, it reads as a moment of relative calm before the template wars of the mid-2000s fully took hold.