Oakland Athletics Retro Vintage Washed Twill Cap in Team Colors by American Needle Front Vintage Embroidered Flat Logo on a Soft Washed Twill Fabric. Stone Stitchout. Precurved Visor/Matching Undervisor, Tape & Sweat Band 5 Panel Slouch & Self Button Backstrap Design Closure Allows For A Perfect Fit Every Time Officially Licensed by the MLB Style: Mackenzie Cap by American Needle, Fabric: Cotton Twill Backstrap: Plastic