Hertzcloth | High Conductivity & All Natural Shielding Fabric Sold Per Linear Foot X 59 Inch Width Highly electrically conductive 70% cotton / 30% stainless steel Excellent radiowave/microwave shielding & Great for high level grounding! Soft safe for skin contact, machine washable Cuts and sews like ordinary fabric. SOLD per LINEAR FOOT. Use it to make garments, drapes, bedding and more.