Compression socks effective for promoting blood circulation and reducing swelling. - Model Name: Mukunain PRO - Pressure Level: 23hPa, 35hPa, 39hPa - Color: Black - Quantity: 2 pieces - Made in Japan Suitable size (unisex) Calf circumference: (approx.) up to 30-40cm Thank you for viewing. I purchased these for someone, but they were the wrong item, so I am selling them.