Solid rubber cage for traction and durability. Tongue and forefoot are integrated for a comfortable feel. The MBT KAFALA COFFEE Clearance and MBT SHOESMBT Patented Rocker Sole Technology. Up to 50% Off. Compare Latest Offers! Elastic strap and rubber cage on the heel give your foot extra support. MBT KAFALA COFFEE Clearance | MBT SHOES Dual-density midsole provides stability in the heel and flexibility in the forefoot. Conical studs on the forefoot and bladed studs on the heel maximize penetration and traction with optimal pressure dispersal.