The Pcore is an exceptionally lightweight, comfortable, and effective lower back/core belt made from revolutionary breathable mesh material. It is one of the most dynamic and comfortable options available on the market today. The Pcore now includes a removable and adjustable self-heating magnetic support pad that can be used anywhere on the body for enhanced pain relief and increased circulation. Sizes (Length): When measuring, please measure around the area where you will wear the belt (usually around the belly button): M: 34-37" (87-95cm) USES – Pain relief, Level 1 Lower Back Support, Core Activation Training, Waistline Reduction, and Improved Posture...