... 4.OEM & ODM fashional wool flat baseball caps with 3D embroidery logo 1,100% wool fabric, back closure: ... 100% wool Other material also available. wool, T/C, polyester, acrylic, canvas, denim, camouflage, washed wrinkle fabric, microfiber, ... also availableSize adjustableadjustable or flexfitLogo 3D embroidery Thermal transfer printing, screen printing, embroidery, 3D embroidery, rubber patch and etc ...