I work for EMS and bought these boots on 3-10-14 and not even two months later, they were tearing. The inside rear portion of the boot just above the heel had worn thin and was cutting into my skin. I did not like the fact that this boot had a thin leather-like flap where the boot zips up because that flap kept getting caught in the zipper. Not something I need to bother with when I need to throw my boots on in a hurry. I wish these boots came wider in size. I went with the widest size available and they still feel like they're a little tight on the sides of my feet. As for comfort, they feel great just like a tennis shoe and had excellent grip and traction.