Leather back strap with brass, plastic buckle, metal buckle, elastic, self-fabric back strap with metal buckle etc. And other kinds of back strap closure depend on your requirement
5. Visor
Flat or curved
Soft or Hard Pre-curved
6. Color
Custom color
Standard color available, special color based on pantone color card
7. Size
58cm or custom
Normally, 48cm-55cm for kids, 56cm-60cm for adults
8. Logo and Design
Custom design
Printing, Heat transfer printing, normal embossed, woven badge, sequin, metal badge, appliqué , etc.