The Point Relief Cool-It Roller reduces swelling, inflammation, and pain with a combination of cold compression and soothing massage therapy. Using cold compression therapy constricts the blood vessels in irritated skin which helps decrease swelling and ease pain. Rolling the cold roller against the skin will drop the temperature of the skin slowing cell metabolism and limiting cell damage to affected tissue. The easy to maneuver Cool-It Roller stimulates micro circulation in the tiny capillaries of the skin to improve delivery of oxygen and nutrients and promote skin detoxification. This roller is size large, best for large body areas.