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The REI CoolMax(R) EcoMade(TM) crew socks for kids deliver moisture-wicking comfort and performance. CoolMax EcoMade fabric offers the same moisture-wicking, quick-drying performance as regular CoolMax, yet is made of recycled PET. Nylon adds durability and spandex supplies stretch and shape retention. Mesh-knit instep panels promote airflow and move moisture away from feet, keeping them dry and blister free. Lightly cushioned bottoms and reinforced heels and toes add shock absorption and protection from wear. Lin Toe(R) "no feel" seams preclude irritation and chafing along toes. Closeout.