Armycrew Hook and Loop Patch Flex Fitting Tactical Air Mesh Back Cap. 50% Polyester , 50% Cotton. High quality hook and loop patch tactical air mesh back flex cap in variety of colors. Hook and Loop Patch Area: Front: 3" x 2" Top: 1" x 1" and Back: 4.5" x 1", Interchangeable Hook and Loop Patch. 2 structured front panels with 4 air mesh back panels, stiff and pre-curved bill. Featured with an inner elastic sweatband, Finished with a stretchable fitted end/closure. 2 sizes available; S/M and L/XL.