Model: NG22 EL NATURALISTA Upper: Leather Removable insole Slip On Elastic Panels Men's NG22 Chelsea Boot by El Naturalista is made with leather upper. Features leather lining and elastic gussets for easy foot entry. Removable insoles. Sole is made with PU to provide additional comfort and durability. El Naturalista shoes are design to fit the natural shape of the foot. The styles that have this ergonomic shape do not compress the foot when walking or rest, providing great comfort with every step.