Zim's Max Freeze Pain Relief Patches provide immediate relief in a convenient disposable product. They need no refrigeration and are portable, easy and ready to use anywhere and anytime you need targeted pain relief. Gently adheres to back, hips, neck, shoulders, and knees. Zim's Max Freeze Pain Relief Patches are 3 15/16” x 5 1/2” and contain 4% Lidocaine and 1% Menthol. Store in a cool, dry place, away from direct sunlight.