These are some tough socks for the guy who really puts his feet through a workout.  First of all they are Carhartt, a brand synonymous with value and ruggedness.  I've never purchased a product by Carharrt that didn't really stand up to any test.  The socks fit well and feel good on your feet.  The heel and toe are reinforced for longer wear.  They are especially nice under work boots.  They stand up to repeated wash and dry cycles with no noticeable shrinkage or stretching.  If you are a person who works in construction or any field that requires long hours on your feet doing tough work, you should give these socks a try.  I don't think you will be disappointed.