Comfortable boots, however after a few weeks both left and right boots had completely separated at the heel. Eventually I could easily stick my fingers through the hole between the sole and upper and touch my sock. Needless to say, these boots were no longer waterproof. I was expecting high quality from these boots, but the durability is terrible. I wore them for 8 hours a day, but I wouldn't consider my use extreme duty. Especially considering the relatively high price, I would not recommend.