For example, the Copper Compression Powerknit Socks have moderate compression at 15 to 20 mmHg. They have a 20 to 30 mmHg compression level that doesn't feel too tight after all-day wear, but still provides enough compression to aid with blood circulation and post-workout recovery. A high, wide-calf sock option is hard to come by, but the WH team discovered the Comrad Knee High Compression Socks.