The Matthew shoe features leather upper, Comfort Gel: Anatomically designed gel pad designed to absorb the impact of each step and provide cushioning for all day comfort. KORE: This dual density outsole is biomechanically designed for walking. The midsole is created from an soft EVA material to cradle the foot. The outsole is created from a slip-resistant rubber compound that adds traction and durability. Combined with an aggressive rolling impact zone on the heel, these shoes are made for walking. Non-marking, slip resistant outsole.