【High-Performance Electromagnetic Wave Shielding from Domestic Brand Longsafe】 This extra-large 100 x 110cm electromagnetic wave shielding sheet cuts 99.9% of electromagnetic waves from 5G, Wi-Fi, and electronic devices. ◆ Versatile Applications ・ Smart key relay attack countermeasures ・ Electromagnetic wave protection for bedrooms and desk areas ・ Improvement of mobile phone and PC work environments ・ Protection of living spaces for children and pregnant women ◆ High-Quality Japanese Brand Cuttable and easy to use, using high-quality materials for long-term use. ◆ Product Specifications Size: 100 x 110cm Color: Silver Electromagnetic Wave Shielding Rate: 99.9% Compatibility: 5G, Wi-Fi, mobile data, etc. You can freely cut it and use it for various purposes. Please use it to create a healthy living environment.