Full grain oiled waterproof leather upper with Cordura(R) breathable underlays. Breathable GoreTex(R) membrane waterproof lining. ShockAbsorbers Twin Pad(TM) Comfort Technology. Removable dual-density polyurethane sock footbed. Lightweight, flexible polyurethane midsole with rubber street side. Featuring the 30-Day Commfort Guarantee. Goodyear(R) welt construction.