Keep their feet comfortable and supported all day with the Under Armour Performance Tech Kids' 3-Pack Crew Socks. Designed for active kids, these youth unisex socks deliver the perfect balance of cushioning, breathability, and secure fit. Built-in arch support helps reduce foot fatigue during sports and everyday activities, while mesh panels on the top of the foot increase airflow to keep feet cool. Medium cushioning throughout provides comfort and impact protection without added bulk. The updated Locked-In Fit design keeps the sock securely in place on the heel, eliminating constant adjustments. Made with durable, moisture-wicking material that dries quickly, these socks are ready for school, practice, and play. Features Youth unisex crew sock design 3-pair pack Built-in arch support reduces foot fatigue Mesh panels for enhanced breathability Medium cushioning for comfort & impact protection Locked-In Fit design prevents slipping at the heel Moisture-wicking fabric dries fast Durable construction for everyday wear Ideal for sports, school, and active play Size Chart US Youth Euro UK Metric (cm) SM 13.5K – 4.5 31.5 – 36.5 13 – 4 19.4 – 23.5 MD 4.5 – 7 36.5 – 42 4 – 7.5 23.5 – 26.7