Rothco Tactical Operator Cap MFH 601185 Pentagon ERA US Trucker Cap Promotion 2025 May Pentagon ERA US Trucker Cap 36 36 cm 30 cm 73 cm 78 cm or 83 cm 38 38 cm 31 cm 73 cm 78 cm or 83 cm 40 40 cm 32 cm 73 cm 78 cm or 83 cm 42 42 cm 33 cm 73 cm 78 cm or 83 cm 44 44 cm 34 cm 73 cm 78 cm or 83 cm 46 46 cm 35 cm 73 cm 78 cm or 83 cm 48 48 cm 36 cm 73 cm 78 cm or 83 cm 50 50 cm 37 cm 73 cm 78 cm or 83 cm 52 52 cm 38 cm 73 cm 78 cm or 83 cm 54 54 cm 39 cm 73 cm 78 cm or 83 cm 56 56 cm 40 cm 73 cm 78 cm or 83 cm 58 58 cm 41 cm 73 cm 78 cm or 83 cm 60 60 cm 42 cm 73 cm 78 cm or 83 cm the back loop field on the operator hat measures 3 ¾ Inches x 1 Inch and is great for attaching additional morale patches and branch tape Four reinforced air holes on this military hat provide ventilation