Skater Hello Kitty children's masks 10 pack (for 4 years and above) The rubber is made of soft material, which can be worn without earache. The 3-layer non-woven fabric structure is 99%. The all-round three-layer filtration VFE is 99% or above. The filtration efficiency is strong to block the pollutants in the air. Dust, isolates pollen ⦁ 1 pack of 10 ⦁ Suitable for 4 years and above ⦁ Rubber is made of soft material ⦁ 3-layer non-woven structure ⦁ Approved by members of the Japan National Mask Industry Association ⦁ Size approximately: 90mm×145mm ⦁Manufacturer: Skater