Hyzrz10 Pcs Disposable Chef Hats Non-Woven Paper Fiber Cap for Kids, Adults, Adjustable Unisex Kitchen Caps Bulk Set

First, this is not a circular chef hat! When you put it on you will look like the pope. Also it is adjustable but the tape they provide to size it does not stick to the material of the hat. I had to staple mine at the correct size to hold its fitted size. I would not recommend.

I needed a particular hat for my Chef Linguini costume and the lightness and adjusting nature made for a perfect fit. It also helped that it had a slight transparency to it where you could see the makeshift shadow of Ratatouille's Remy under it.