All-day, drug-free acupressure system provides remarkable relief from sciatic nerve pain. Acupoint pressure pad applies targeted pressure that turns off nerve pain signals for instant relief. FDA-cleared as a medical device. Can be worn under clothes. New, larger size fits most legs, calf circumference from 12.5” to 21”. The Velcro adheres well past the Velcro base. BeActive should be worn right below the knee, with the “R” on top for the right leg and the “L” on top for the left leg. BeActive® Plus is effective when worn on a single leg, on the side of the pain. 6" L x1" W x 6.5" D, Neoprene/Polyester, imported.