【Size】Head Circumference-medium:22.6 in (57.5 cm), Suitable for most adult women men -small:21.2 in (54 cm), Suitable for most child.【material description】100% polyester【product description】the cap is made of high-density plain fabric, which is more effective in preventing rainwater from penetrating into the hat. It has strong air permeability. It can take care of sunscreen in summer and is suitable for all seasons. Transparent PVC shelter, effective comprehensive protection nose, mouth, eyes by saliva, dust, fog, pollen and other external damage. Transparent design does not affect the field of vision, removable and washable, transparent compartment can be reused, easy to install, easy to clean, not easy to scratch the surface.【applicable scenario】crowded places, outdoor, supermarket, park, school and work.【description of accessories】 PVC transparent protective cover【washing instructions】hand washing is recommended. Do not bleach.If you have any issue upon receiving the item, please contact us immediately. We will respond as soon as possible and ensure that your issue is properly handled.