NWT SockWell Women's Free Fly | Moderate Graduated Compression Socks - Size M/L (US 8-11). Made in the USA. 33% Merino Wool; 32% Rayon; 30% Nylon; 5% Spandex. Color: Charcoal with hummingbird pattern. SKU #SW110W COMPRESSION Moderate (15-20mmHg) Graduated Compression CUSHIONING Ultra Light Cushion Sole FEATURES Spandex throughout sock Graduated Compression Leg Turn Welt Top Arch Support Seamless Toe Closure