Mueller OmniForce® Plantar Fascia Sock The average person takes about 6000 steps each day. For some, those are painful steps felt in the arch and heel area with notable swelling and discomfort. The OmniForce® Plantar Facia Support Sock targets those areas with focused compression (20-30mmHg around the arch & 18-20 mmHg around the ankle). That means you get comfortable support. May be worn all day, under or over socks.