Safari Costume Hat Straw Pith Helmet Adjustable 20624 Imported Straw Pith Helmet Adjustable Sweatband Costume Safari Hat This is a new item. It is very well made from pressed treated straw and has an adjustable sweatband with a Velcro adjuster. Perfect for the great white hunter. This hat will easily fit up to 7 5/8. This hat will easily fit up to 7 5/8.