These were designed with this little plastic piece in the heel. Once these stiff ass hell shoes start "breaking in," the heel rips like almost all shoes and this plastic piece is exposed.
I tried fighting through the pain but eventually developed a large blister that eventually got infected creating some scar tissue on the back of my heel.
I ordered mine from R.E.I. and returned them after a couple months of use. Really uncomfortable and stiff approach shoe. I'm not very happy with this product at all!!!
They wear down in weird ways and the soles deteriorate quickly. Boo!