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| Material | Soft elastic PU sponge |
| Colours | black |
| Application | Dust-proof, anti-pollution, daily protection |
| Package | 1pc/PE bag, |
1.Colour: variety colors for your customed.
2.Can be washed 4-8 times.
3.Avoid high temperature, high humidity or direct.
4.Do not use it if you have skin allergy.
5.Eco-friendly , fashinable, convenient to use.
6.New 3.0 valve
7.Double deck filter layer
8.Widened lanyard ,more comfortable
9 .washable,can use many times.