I actually have a few pairs of muck boots. Tall arctic sport that I wore all winter long in upstate NY, tall chore for spring and fall and then these short chore for summer...<br />I know that Muck offers a great product but the mid chore pair I got must be lemons. The left boot (fits fine) but the back of the heel rubs off so bad it ruins every pair of socks I had (seriously I had to buy more) plus the back of the boot is completely wore off.. No blister on my heal and as I said I have many pairs of these boots so I know they fit fine... I think I just got a bad, defective pair.<br />Very disappointed considering they're not &#34;cheap&#34;.