I have owned this pair of boots for 3 years and worn them moderately. They have been my "go to" footwear during cooler weather here in NC but they are not dedicated cold weather boots. For my climate they are perfect when paired with appropriate socks. These boots have held up very well as far as wear and tear. The rugged Vibram soles barely show signs of use. The right boot developed a very annoying squeak last season. Every step sounded as if a small rodent was being tortured. I had forgotten about the problem until the first time I put the boots on this year. After some communications with NITB (full name and rank withheld for security reasons) in Merrell's customer service department I was granted authorization to return the boots for repair or replacement. I consider this to be AWESOME CUSTOMER SERVICE and will continue to purchase Merrell footwear and have already recommended Merrell to several friends acquaintances and colleagues.