... Features: Pediatric,Dia.35×30mm,oval shape,foam backing,Solid conductive gel,Ag/AgCl sensor.3).Components: Metal snap,Ag/AgCI sensor ... ,low impedance solid medical conductive gel,white or original color PE foam tape or cloth tape ... skin to breathe and function normally;-Hypoallergenic adhesive and solid gel on the electrodes ensure minimal skin irritation;-Aproven breathable ...