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I wear altberg defenders, which are the boots that the British army wears, aswell as the royal marines to my knowledge.
It's very sturdy with a good amount of support on the ankle. It's fully leather and fully waterproof if taken care of.
You can probably get a millitary issued(not civilian) as I have from sites such as eBay from anywhere of about £50-80.
This is perfect to wear in cold climates but I advise not to wear excessively in hot climates due to the lack of ventilation (due to your feet being completely enclosed in leather.