Medium: Women's Shoe Size 5-10 or Men's Shoe Size 5-9 Large: Women's Shoe Size 10-13 or Men's Shoe Size 9-12 Sock Height: Crew Best For: Everyday Wear Sock Construction: Fitted Sock Fit: Regular Cushion Level: Medium Cushion Pack Size: 1 Pair Made For: Everyday Training & Casual Wear Arch Support: Arch Support - Built-in arch band provides a secure, supportive fit Cushioning: Medium Cushion - Targeted cushion under the foot for comfort, without added bulk on top Seam Type: Comfort Toe Seam - Smooth, low profile toe seam designed to reduce irritation Breathablity: Mesh Ventilation - Strategically placed mesh channel to enhance airflow to help keep feet cool and dry Stay-Up Design: Ribbed Leg with Double Welt Top - Reinforced cuff and ribbed leg help socks stay securely in place Compression Feel: Light Compression - Gentle, supportive feel designed to help socks stay in place without tightness Compression Level: No Medical Compression Grade Yarns Used: 80% Cotton, 11% Nylon, 6% Elastic, and 3% Spandex Fabric Feel: Soft, Cushioned Care Instructions: Machine Wash, Tumble Dry Low Country of Origin: USA