Czechoslovak army boots made in 1968 - treated with kitchen oil, still waterproof and my favorite motorbike boots. (more info in comments) : r/BuyItForLife
Czech Military Surplus Leather Boots, Used - 230042, Combat & Tactical Boots at Sportsman's Guide
New Czech Army Woodland and Black Leather Boots – Surplus Provisions
Original Czech Army Legendary Durable Boots M90 VZ.90 - New Condition - Rare | eBay