WW2 German Luftwaffe High-Altitude Leather Flight Boots Willop Nokel Heated 11

Rare WW2 German Luftwaffe high-altitude leather flight boots. Size approximately US 11. Electrically heated & fleece-lined. Rubber soles embossed with “Original Willop” marking. Inside stitched label on both boots reads “Nokel—PST 4004E, 24 volt, 11 watt. No. 24515.” Fleece lining entirely intact with no discoloration. Absolutely museum quality. Only pair known to exist in this condition.