Plastic made structure, So no Harm to head or eyes. Perfect in Sun and Mild Rain Cover you Head with Hanky before wear this to avoid Inconvinience, if your hair is less Good Face UV protection, Easily Foldable, 21 Inch Diameter After Open A great,unique and inexpensive gift. Ideal item for people working in SUN..like farmes,labor, fishing and KIDS Can easily assemble when ever the plastic came out