Sublimated simulated flannel face mask! Build your own personalized face mask, add customized content right in our builder! These masks are reusable as they are machine washable. Our mask construction consists of materials made with a soft polyester micromesh blend. Each mask is built constructed with a filter pocket. One complimentary PM 2.5 carbon filter comes with your mask purchase – suggested filter use time is 48-72 hours. Adult and youth size. One size fits most. NOTE: This product is NOT a rated mask and is meant for everyday usage, NOT for medical use. These masks help with basic daily protection. For health and safety precautions, all Personal Protective Equipment (PPE) Products are not returnable and not refundable.