FEYHAY builds compression socks with a specific material advantage. The 5% copper fiber woven into the nylon and polyester blend is the key differentiator here. Copper conducts electricity naturally, and FEYHAY uses that property to support blood circulation in your legs while delivering a consistent 15-20 mmHg compression gradient. This isn’t a gimmick—the copper fibers are integrated directly into the fabric, not just sprayed on.

At 15-20 mmHg, these sit in the mild compression range. That means they’re effective for long flights, standing shifts, or eight hours at a desk without feeling like medical-grade tourniquets. The sock design follows the natural curve of your foot and calf, so the pressure targets the right areas. Fatigue in your legs fades noticeably after a full day of wear. The 85% nylon and 10% polyester blend gives them a sturdy, breathable feel that holds up to machine washing on gentle cycle.

The real trade-off is durability. The copper fibers add function, but the socks are not indestructible. Air drying is essential to prevent the elastic from wearing out prematurely. For the price of an eight-pack, you get a solid rotation of daily compression wear that actually works for circulation support. Just handle the wash cycle with care.