3 ½ inches

This cap is designed to fit most head sizes comfortably

Dimensions: 15" x 15" x 4" (Gusset)

The elastic clip closure at the back replaces the usual velcro

Classic Washed Pigment Dyed Cotton Twill Low Profile Adjustable Dad Hat Baseball Cap Color:Navy 3 ½ inchesIf you want to keep it simple with the lived in look, this pigment dyed cotton twill cap will do the trick! Unstructured Soft Crown Low Fitting 6 Panel Cap Seamed Front Panel without Buckram 6 Embroidered Eyelets 3 Rows Stitching on Visor Matching Fabric Undervisor Matching Color Sweatband Self fabric Strap w Brass Buckle & Sewn Grommet Button to brim: 6. 5", Brim: 2. 75", Circumference: 22. 5"~23. 25" 100% Cotton