Vital Salveo- Merino Wool Hiking Knee Sock for Outdoor Enthusiasts, Bamboo Charcoal, Dark Gray- X-Large

Far infrared can penetrate to subcutaneous tissues, and have the work of warming, messaging, and promoting blood circulation. Not only raise body oxygen levels but also develop immunity and balance body hydrogen ion concentration. Negative ions cause positive adjustments, increasing brain power and activity and make work effectiveness. Bringing comfortable relaxation and calming emotions, aiming the promotion of health.