Carolina 905 Linesman 10 wor The encapsulated air cells to Coblentz Leather The encapsulated air cells to virtually eliminate compression set so the bounce of cushioned energy return is present for the life of the boot strategically placed polyurethane gel pads in the heel arch and ball area to reduce muscle fatigue for unparalleled comfort this boot features a water buffalo leather vamp and flexible cement construction for durability and movement Vibram® Austin One Piece Rubber Outsole The heavy duty steel shank and a grippy Vibram® sole provide solid support while your feet will enjoy the comfort of a soft lining