For plantar fasciitis, heel pain and arch pain.The FS6 is an advanced medical device manufactured to treat plantar fasciitis, heel pain and swelling using graduated zone compression technology. Finally no more bulky night splints. FS6 gives 24 hour relief and protection!Targeted support zones reduce swelling that cause pain, strengthen & support natural foot structure and improve vascular foot health. The FS6 fits easily under socks and can be worn in most types of footwear. Wear while s