Firetrap memory foam leather insole this firetrap memory foam leather insole is made from pig leather which is 100 natural which is great for your feet topped with a memory foam insole for extra comofort this insole features perforations which helps it be breathable to ventilate your feet and absorb any bad odours a silcone grip on the heel makes sure this insole does not slip around and cause friction which sometimes cause blisters finished off with firetrap branding that provides a great