Authentic vintage Adidas Bayern München away jersey from the 1998–99 season, worn by legendary midfielder Stefan Effenberg (though name 'Matthäus' suggests possible customization or fan edition—Lothar Matthäus left Bayern in 1992, making this likely a commemorative or replica piece). The jersey features a deep navy base with subtle diamond-patterned texture, bold white number '10' and 'Matthäus' lettering on back, 'Bayern München' arched above. Red and white striped collar and sleeve cuffs echo club colors; left sleeve bears DFB (German Football Association) badge, right sleeve displays UEFA Champions League starball patch. Three white Adidas stripes run down shoulders, with red trim accents on sleeves. Made of classic polyester performance fabric typical of late-90s football kits—lightweight, breathable, and slightly structured for athletic movement. Ideal for collectors, retro football fans, or streetwear styling with cargo pants or denim. Perfect for casual wear, matchdays, or vintage sports-themed events. Not a modern replica—shows authentic period construction details including woven jock tag (partially visible at hem).