BSI introduces ColdFlex Blankets. Just like the ColdFlex Wraps, the blankets are 96% water-based, non-irritating, and non-toxic. The blankets are durable and reusable, and clean easily with cool water. As the product slowly evaporates, it removes heat from within the injury, pulling from even the deepest muscle tissues and reducing temperatures within the treated area as much as 30°F. ColdFlex will not cause muscle cramping, tissue damage, or discomfort