This All New Sock Night Splint provides a soothing stretch of the arch by a proprietary acupressure support splint held together by a specially designed sock for instant relief of plantar fasciitis and morning heel pain. Imagine your arch is like a rubber band thats cut and placed in somewhat of a straight line. If you pull each end away from each other, it stretches. If you held each end in place and had someone lift the center of the rubber band, it also stretches. The main purpose of any night splint for plantar fasciitis is to keep your plantar fascia ligament stretched. Its the same concept, but a unique, more comfortable, and more simple way of thinking.