Classic Snapback Mesh-back Ball Cap : Six panels, the front two panels is made from premium cotton with a not too stiff structured to keep the hat in good shape, the four back panels are made from high quality polyester mesh with soft texture. Pre-curved brim, moisture-wicking sweatband, adjustable plastic snap back closure, nice stitching,lightweight, breathable, durable. Easy to Customize Your Own Personality : The trucker hat is a classic front cotton plain blank style,It’s suitable for personalized embroidery or ironing a patche, team logos. It is an ideal all seasons sports hat for all kind of team sports events, company celebrations, group activities. Small or S-M size is fit for 20.8”-22.2”(53cm-57cm), cap size 61/2 , 6 3/4, 6 7/8, 7, 7 1/8