anti-noise earshield professional sound insulation earmuffs work study nap sleep folding shooting factory earmuffs

 Used for safety protection against noise interference

[Purpose]]: concentrate, protect hearing, etc. It is you who fly at home, in the dormitory, in the classroom, by boat
A good helper to avoid noise interference in places such as machine travel, factories, construction sites, and prosperous urban areas. It is your new health.
A good partner in life is also necessary for you to watch F1 games.
[Structure and function]]: cup cover lined with sponge, the outer circumference is covered with imitation leather, the headband can be adjusted and elastic, wearing and protecting
Raw, safe, soft and comfortable, with good sound insulation effect.

[Instructions]]
1. Stretch the headband to the maximum "open" position and cross the top of the head to cover both ears;
2. Relax the headband and return to position, adjust the height of the Cup until the headband can support the Cup, and both ears feel
So comfortable;
3. The soft cushion of the earmuff should fit the head tightly;
4. Adjust the headband to ensure correct tightening and effectively isolate noise