Forelli technology: It is specially produced for those with protrusions of bone. Thanks to the rubber strips and zipper on the sides, it provides great convenience in putting on and taking off. With the COMFORT and Air sole technology series, the pressure from the ground is relieved and you can walk comfortably. 100% Natural Leather is removable Anatomical Suede Covered Latex Fuspet Relaxing Flexible Leather Rubber Sole for Bone Protrusion ForeFeel: Experience a Lightness in Boots Thanks to a Special Technology Series Wide (H) fit.