Made of 35 percent cotton and 65 percent PET-spun (polyethylene terephthalate). PET-spun is basically a blend of plastic and polyester. If you're looking for a simple and Earth-friendly cap, this is definitely an option you should consider. This hat is made of recycled plastic bottles. However, don't be alarmed because the fabric is as soft as brushed cotton, if not softer. One size fits most with a velcro strap closure. Crown measures 3.5 inches deep. Made of 6 panels and is unstructured. Bill measures 3 inches long and is pre-curved with the same color under the bill. Thick, soft and light material. Hand wash only. Available colors include: black, khaki, navy blue, olive, stone and white. Size: One Size Fits Most Color: Grey