The O'Neill Women's Cloth Mask is made from a polyester exterior and cotton interior. It's breathable, washable and skin friendly.This non-medical grade mask helps keep out dust and pollen with a universal fit and has been designed with your comfort in mind. The O'Neill Women's Cloth Mask is an essential. This face mask has NOT been tested in any medical scenario. The prevention of disease, viruses or any other medical condition is unknown.