Long Sleeve T-shirt Email $138.00 SKU: B19TLSGY-L 42% Silver fibers, 53% Cotton fiber, 5% Nylon. Soft and comfortable unisex, this design offers extra coverage. Colour Gray Black Size S M L XL Back to: Shop Ask a question With shipment Tracked Shipping for $10.55 Description Specification Care LIKE A Wi-Fi UMBRELLA. This Performance Long Sleeve Tee gives you that extra coverage and is made from a soft and comfortable fabric designed to reduce signals like WiFi, Bluetooth, 4G/5G cellphone radiation. Features a straight fit, V neck, Long Sleeves, unisex, serger stiching and tagless label for reversible wear.Make this part of your protective EMF clothing ensemble. This item is reversible.Click here to find out more. Attenuation 99.99% Frequency Range 10MHz~10GHz Conductivity < 1 ohm / cm Suitable for: * * 5G: Good attenuation tested up to 40GHz. What does all this mean? Hand wash - up to 30º C / 86º F Do not bleach Drip dry Dry in shade Do not iron Do not dry clean Click here for more on fabric care.