When you leave without the Welding Cap, you are eschewing the wisdom of the ages about staying warm. The hat has a welder-cap design that creates a lower-profile crown and a skin-friendly, formfitting inner headband. Made from a breathable blend of organic cotton/hemp fabric for durability and ongoing comfort in simmering weather. With an eye-shielding brim and ventilation holes. Updated size range for a more secure fit.