The closure of a cap or hat is a mechanism at the back that allows for size adjustment to ensure a comfortable fit. Common types include snapback closures, which use plastic snaps; strapback closures, featuring adjustable straps with buckles or Velcro; and fitted closures, which are elastic or custom-sized for a snug fit. The closure not only enhances the cap's functionality by accommodating various head sizes but also adds to its overall style and versatility.
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