Infused with bamboo, charcoal, and germanium anion technology, the Incredibrace® Back supports circulation to help reduce pain and soreness. Hook and loop closure provide a generous amount of adjustment and two elastic side pulls allow you to dial in the perfect amount of support. Those with chronic back pain and those who've overworked their back will appreciate how this brace is supportive while allowing you to remain active. Incredibrace® Back is vented promoting comforting airflow for longer wear. By waist size LG (30-33"), XL (34-37"), 2X (38-44"), 3X (45-53"), 4X (54-60").