Baseball Caps by Flexfit. Details:Enjoy breathable comfort with a Flexfit 110 Mesh Trucker Hat. These blank 6-panel hats for men offer all-day comfort with their mid-profile, mesh side and back panels, and a unique combination of stretchable Flexfit technology and a matching snapback closure made to fit a wide range of sizes. Not only is this snapback hat stylish, but it also features sun protection with a curved visor and a matching undervisor for enhanced shade and style.