Combining soft, breathable material with an adjustable dorsiflexion strap, the Powerstep UltraStretch Night Sock helps you tackle Plantar Fasciitis and Achilles Tendonitis while you're catching some much-needed rest. The non-stretch area of the toe ensures that a proper stretch starts from the ball of the foot, rather than the toes, helping to alleviate the pain you feel from common running overuse injuries.