... 4.OEM & ODM fashional wool flat baseball caps with 3D embroidery logo 1,100% wool fabric, back ... closure: buckle/velcro/fabric strape or snap back.2,Size adjustable, one size fit all. ... 3,Pre-curved visor (peak)4,Cap with embroidery on front and back panel and visor-- ... Back closure Velcro7 hole plastic snap, velcro, brass/metal buckle and adjustable tuck strap with slide closure, and so ...