Sumifun 4% Lidocaine Relief Patches 30 Count30 Patches Value Pack 30 Pieces Individually vacuum packaged patches per box. 3. 9" x 5. 5" (10 cm x 14 cm) specially sized lidocaine patches fit certain areas for all body parts such as neck, back, shoulders, knees, and elbow Maximum Strength 4% Lidocaine Gel Patches provide fast, deep, and temporary relief for sore muscles in your leg, back, and hip, and joint in your knee, shoulder, and neck Fast Acting & Long Lasting our lidocaine patches maximum