Rubber gives our soles flexibility and durability. This is how we get comfortable, resistant and biodegradable soles in 500 yearsDetachable insoles with an anatomical design. A bonus for those who need to wear their own orthopedic insoles or people whose feet are sweating profusely. Made of recycled PU.This type of last has a biased pattern that conforms to the natural shape of the foot. It has been done studying the anatomical configuration of the feet so that the shoes are replicas of our size.