These are lightweight, ergonomic foot arch support insoles designed for enhanced comfort and posture correction during daily wear. Made from soft, flexible thermoplastic material with breathable perforations across the arch area to promote airflow and reduce moisture buildup. The U-shaped contour precisely cradles the medial longitudinal arch, providing gentle lift and reducing fatigue for flat-footed or overpronating users. Suitable for shoes size 35–39 (EU), labeled as 'Gray Small' in Chinese text overlay. Ideal for casual footwear, office shoes, or light walking—perfect for commuters, students, or anyone seeking subtle orthotic support without bulk. Not a branded product; no logos or trademarks visible. Simple, functional design prioritizes fit and breathability over aesthetics.