Adjustable ball caps have casual comfort and flexibility that make them perfect for everyday wear. Like all baseball caps, these caps have a rounded crown and bill in front for sun protection. But unlike other caps, their sliding adjustable back strap makes them easy to size for a snug fit. Available in a variety of fabrics and colors, these caps are typically stitched from six panels and may have eyelets for ventilation. Some adjustable caps have graphic art or logos across the front that is either screen printed or embroidered.