AF 36(600)6474, and Consolidated Controls Corp. Exterior has the faded white U. Drawstring top closure with padded/soft fabric body, likely used for carrying/protecting a flight helmet or pilot gear. Shows age, fading, surface marks, and a small visible spot/stain as shown, but the label and USAF marking are still present and readable.
Great collectible military aviation piece, display item, or vintage flight gear bag. Small light mark (may be a bit of paint) shown in last image.