This pillowcase is made of Steel-Gray and white cotton fabric. Steel Gray is a compact cotton/polyester/stainless-steel fabric for HF LF shielding. Since steel threads aren't very soft on the skin, it's recommended to sleep with your face on the white side. 

Size:
50 cm x 70 cm (19.6" x 27.5")

• Attenuation: 42 dB
  
• Colors: Gray, white
• Raw materials: 40 % cotton, 30 % polyester, 30 % stainless steel
• Surface conductivity: 100-800 ohm (square resistance)

The above-mentioned screening attenuation values always apply to 1Ghz. The screening attenuation is regularly tested in our own EMC laboratory, we have measurement setups due to the following standards: ASTM D4935-10, IEEE Std 299-2006, IEEEE Std 1128-1998, ASTM A698/A698M-07

Fabric Care
- Wash at gentle cycle 30°C 
- Iron without steam at degree 1 
- No drying in tumble dryers 
- No bleaching 
- No chemical dry-cleaning