• Superior noise reduction of up to 45 dB (SNR) that effectively filters noise at all frequencies. • Multi-layer acoustic structure made of ultra-soft liquid silicone with SGS safety certification. • 3D ergonomic design with 8 sizes (XS-L) that adapt perfectly to different ear shapes. • Selective frequency filtration technology that weakens low-frequency noise and protects the eardrum. • Reusable product ideal for sleeping, traveling, studying, working, or attending concerts and events. • Minimalist, lightweight, and portable design, easy to carry in your pocket or bag.