USAF Retired Washed Blue. Washed blue low profile ball cap beautifully custom embroidered with Hap Arnold Air Force logo and 'U.S. AIR FORCE RETIRED' stitched into cap, and 'U.S. AIR FORCE' stitched into the bill. Each hat has a hook and loop adjustable back, a padded sweat band, a triple stitched bill, and reinforced vent holes for comfort.