100% Cotton Snapback Brand Classic TRUCKER MESH BACK ball cap. Tough as nails and built to last a lifetime Classic military 6 Panel construction, the crown (front two panels) is 100% cotton super twill which is buckram reinforced to provide a smooth and durable structure, the back four panels are 100% unstructured polyester DURAMESH for maximum strength and ventilation One size fits most, fully adjustable with a snapback tab on the back. Fits adult sized heads from small (6-3/4 or 54 cm) to XL (7-3/4 or 62 cm). Snapback zenith is set at 7-1/4 (58 cm) Every hat Hawkins Military Merchants sells is lovingly wrapped in plastic and then shipped in a sturdy box to ensure its pristine delivery. We are a veteran owned and operated company, serving vets since 1865.