Feature: 1. [Promote blood circulation] Microcurrent can be transmitted through it, promoting your blood circulation. 2. [Relieve pain] Relieve pain and numbness of arms, legs, back, neck, shoulder and waist. 3. [Convenient] Self adhesive, durable and reusable. 4. [Widely-used] Perfect for both professional clinic and home use. 5. [Unexceptionable] An great gift for the aged, white-collar worker, manual worker, driver and athlete. Specification: Description: These electrode pads are suitable for almost all tens (Transcutaneous Electrical Nerve Stimulation) Machine. It is a superb gift for friends and relatives, why not have a look now? Features: [Promote blood circulation] Microcurrent can be transmitted through it, promoting your blood circulation. [Relieve pain] Relieve pain and numbness of arms, legs, back, neck, shoulder and waist. [Convenient] Self adhesive, durable and reusable. [Widely-used] Perfect for both professional clinic and home use. [Unexceptionable] An great gift for the aged, white-collar worker, manual worker, driver and athlete. Specifications: Type: Electrode Pad Color: Gray Material: Nonwoven Cloth & Gel Size of Large Electrode Pads: Approx. 9.1 * 4.7 * 0.6cm / 3.6 * 1.9 * 0.2in (L * W * H) Size of Small Electrode Pads: Approx. 4.1 * 4.2 * 0.6cm / 1.4 * 1.7 * 0.2in (L * W * H) Item Weight (12pcs): Approx. 85g / 3oz Total Size:Approx. 16.5 * 12 * 2.2cm / 6.5 * 4.7 * 0.9in (L * W * H) Total Weight: Approx. 92g / 3.2oz Package List: 4 * Large Electrode Pads 8 * Small Electrode Pads Package List: 4 * Large Electrode Pads 8 * Small Electrode Pads