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 provide enhanced fit, reduced slippage, and targeted cushioning in high-impact zones. The 3D立体形状 (3D立体 shape) ensures a snug, contoured fit that mimics natural foot movement, while the soft cotton-blend fabric offers breathability and moisture-wicking comfort during extended play. Designed specifically 'For フットワーク' (for footwork), they support quick lateral movements, pivots, and jumps without bunching or friction. Packaged in clear retail sleeve with size S (22–24cm foot length) indicated, ideal for athletes seeking precision-fitting athletic socks. Perfect for competitive training, tournaments, or daily sport sessions where foot stability and comfort are critical. The clean white color pairs seamlessly with any court footwear and maintains a professional, minimalist aesthetic.