Feature:1. Multiple Applicable Parts: Suitable for massaging neck, back, thigh, legs, waist, shoulder, arms and many other parts, lower impedance, more even current distribution.2. Fit Well: Self adhesive design, fit the skin, not easy to slip, smooth, no bubbles, good conductivity, can be used repeatedly, bring you convenience.3. TENS Machine Accessory: Important and necessary accessory for TENS machine, pulse muscle massager, etc. Wonderful replacement for the old or broken one.4. Improve Pain: Easy to install and use, help improve shoulder and back pain, relieve numbness in legs and feet, relieve arm stiffness, make you feel comfortable.5. Portable Design: 16pcs of electrode patch are available, enough to meet your replacement needs. Small and lightweight, easy to carry, suitable for home and travel use.Specification:Item Type: Electrode PadMaterial: White Non Woven FabricSize: Approx. 4 x 4cm / 1.6 x 1.6inQuantity: 16pcs.Package List:16 x Electrode Pad (4 Bag)Note:Please allow slight error due to manual measurement. Thanks for your understanding.