Thorogood boot men size 8D logger series 9" crazy horse water proof steel toe

Thorogood boot men size 8D logger series 9" crazy horse water proof steel toe insulated I cannot tell uf there is a defect on outter sole whee there there is a string or if that's is how it's suppose to be because I'm not that familiar with this brand these are new in box please look at pics before purchase or offer box is damage