Celtic Castilla C.F. is a Castilian club whose identity rests squarely on green and white, here rendered in clean horizontal stripes on their 2000/01 home shirt. The kit is made by Zico, one of several independent Spanish sportswear labels that supplied lower-division clubs during this era. There's nothing flashy about it, just a well-defined stripe pattern and a small club doing things its own way. That straightforwardness is precisely what makes it worth preserving.