Back to Hat Styles YUPOONG 6606 Yupoong Classics 6 Panel Retro Trucker. Crown: Mid-Pro Bill: Pre-curved Closure: Snapback Fabric: Cotton Twill/Nylon Mesh Sizing: OSFM Caramel-Black Caramel Black Brown-Khaki Charcoal-White Charcoal Maroon-Grey Red-Black Rustic Orange-Khaki Khaki Heather Grey-White Heather Grey-Black Moss-Khaki Navy-Silver Navy-White Steel Blue Silver Silver White Multicam Green-Khaki Multicam Green-Black Green Camo-Black