I bought these boots several months ago before embarking on two trips for archaeological field work, and I'm happy to say that they definitely exceeded my expectations. The full split-grain leather covering kicks water's ass, and my feet stayed dry even when we had three days of straight downpour and working in mud in Ireland. That being said, they're still quite breathable and kept my feet comfortable for hiking around the Andes in dry 70-80 degree weather. They are definitely a bit heavier than other boots, but it's definitely worth it for the extra durability and structure for long hikes and working at the dig site. I highly recommend this boot!!!