Made on its inner layer with cotton fabric (MeltBlown) and on its outer face with Polyester (93.3%) and Spandex (6.7%). One size fits all Unisex kids Easy Adjustment: Double elastic back strap easy to put on. Wide enough to cover the nose and mouth, offering perfect protection. Its adjustable elastic straps allow a good grip on the ears without exerting excessive pressure that can affect the user. It is recommended to wash it by hand with neutral detergents, without softeners, abrasive and / or corrosive liquids and without the use of dryers in order to guarantee its longevity and good condition, as well as the preservation of its filtering properties. Warning: This mask is NOT a Sanitary, Surgical or Hygienic Product within the meaning of Directive 93/42 or Regulation EU / 2017/745, OR a Personal Protective Equipment within the meaning of Regulation EU / 2016/42. Included 10 refilters