Medi-Stim’s Sof-Stim electrodes are ideal for patients with sensitive skin or elderly patients with thin, delicate skin. Sof-Stim electrodes are made with a tan tricot knit material, highly conductive silver-coated carbon film, and feature a unique soft, blue-colored patented Polyhesive® gel that allows more oxygen to permeate through the gel to the skin. It is softer than most conventional gels, making electrode removal easier and gentler on the skin. Sof-Stim electrodes also work well in hairy areas. as the thick soft gel can penetrate through the hair and adhere better to the skin. Made in USA. Approximately 15-20 applications.