Children Students Soundproof Earmuffs Protective Noise Reduction Sleeping Learning Earmuffs(Blue)

1. Safe material double-layer lining, soft and comfortable, high degree of fit, effectively enhance the wearing comfort and better protect the human head
2. Stainless steel double wire metal ring connects the wide ear cups, the wire is highly elastic and not easy to deform
3. Stretchable and adjustable, the angle can be adjusted according to the face shape
4. Cups with imitation leather wrapping, cups of sound-absorbing sponge decorative design, light weight, high elasticity, easy to wear and comfortable
5. Function: noise reduction NRR 30db SNR 35db
6. Lining material: high-density sponge
7. Cup thickness: about 2mm