Source Unknown Brand Y-3, designed by Yohji Yamamoto. Key Features of the Jersey: Design Concept: The jersey features a hand-drawn flame graphic that symbolizes the Japanese team's strength and dynamism. Branding: It prominently displays the Y-3 logo on the chest alongside the official Japan Football Association (JFA) crest. Technology: These jerseys often utilize AEROREADY or HEAT.RDY technology for moisture management and breathability during athletic use. Sustainability: It is typically constructed from 100% recycled polyester.