Deep Relief Actiflex Patch uses hydrogel technology that cools and provides soothing relief for up to 12 hours. Fast-acting and long-lasting, the patch offers targeted application and is a complimentary therapy designed to get you through day or night. The patch can be worn under clothing and whilst sleeping. It contains Bionovex Oil, a purified marine oil derived from New Zealand Green Lipped Mussels, a source of Omega-3 fatty acids, and Hyaluronic Acid (HA), which is produced naturally in the body and is a key component of skin, connective tissue and the synovial fluid around joints. The flexible fit allows direct application onto most joint areas such as knee, hip, shoulder, ankle, neck and elbow.