The recommended compression level for compression socks for varicose veins is between 15-20 mmHg and 20-30 mmHg. The compression level may vary depending on the severity of the condition.

Approximately 73% of women and 56% of men experience varicose ... or moderate (15–20 mmHg) compression, to medical grade compression socks of 20–30 mmHg and 30–40 mmHg.