Yonex 3D Ergo Socks are premium performance socks engineered for footwork-intensive sports like badminton and tennis. Featuring left/right-specific anatomical design based on human ergonomics—world’s first such dedicated sock construction—these socks deliver enhanced fit, reduced slippage, and targeted cushioning in high-impact zones. The 3D立体形状 (3D立体 shape) ensures precise contouring to the foot’s natural structure, while breathable cotton-blend fabric wicks moisture and maintains comfort during extended play. Ideal for competitive athletes and serious enthusiasts, they provide arch support and heel reinforcement without bulk. Packaged in clear retail packaging with Japanese/English labeling, size M (25–28 cm foot length) is clearly marked. Perfect for daily training, tournaments, or active lifestyle use where foot stability and blister prevention matter. Machine washable and durable for repeated wear, these socks exemplify Yonex’s commitment to sport-specific innovation and athlete-centric design.