The AMP LT 6" wedge lace up boot is built with the same great SPR leather our classic wedges are known for but now includes our premium comfort insole and a high-performance outsole. The upper features combination eyelet and hook hardware, a nylon pull tab for easy on and the Counter Lock System to prevent heel slippage. The interior is unlined and contains a padded counter pocket for additional heel support and the removable AMP LT memory foam insole. The outsole package on this 6" wedge work boot is comprised of a fiberglass shank for added stability, a cushioning EVA midsole, and our proprietary Carbo-Tec rubber. This special rubber gives the outsole great resistance against heat, oil, chemicals and slips.