This is a woven mesh sun hat in the classic shape of the traditional pith helmet. The open weave of the mesh material allows air to circulate through the hat. The shell is held away from your head by design, making it the lightest, coolest hat you can wear during the hot summer months. Velcro® is used to close the headband, so our one size will adjust to fit most people. There is an absorbent washable terrycloth sweatband on the front of the headband.  The unique design and construction make it the coolest, most comfortable hat you can wear.