Santamedical Re-Usable Tens Unit Carbon Electrode Pads With Premium Gel - Satisfaction Guaranteed Item Description 5 Packs of 4 Electrode pads, Total of 20Non Irritating to SkinUse for TENS, IF, Muscle Stimulator and moreFlexible solid-carbon electrode pad for maximum charge delivery and comfortRe-useable Gel, Cloth backing for comfort and flexibility The Santamedical Unit White Cloth series of Electrode Pads are high quality, premium TENS Electrodes made with high quality adhesive for reusability. These TENS Unit Electrodes are professional quality and very popular with Healthcare practitioners for in Shipping Our stock all ships from our US-based warehouses.