Exo-cross iS a systematic footwear design, Unlike traditional ones this is a system that consists of two independent parts. On the one hand, we have the rigid part of the footwear, which gives structure to it and protection to the foot, and on the other the inner boot, the soft part of the footwear, the one that covers the foot, made of fabric. The exoskeleton, the rigid part, consists of a single piece injected in croslite, a material with unique physical and mechanical properties, which does not lose its original shape with use, it is elastic, resistant to wear, this part comes in casual, running and trekking version. The internal part of the footwear is made of different types of fabric to different uses, summer fabrics, winter fabrics, waterproof fabrics, fabrics more reinforced for better foot protection. The particularity of this is that it allows the user to acquire at the same cost as today costs a conventional shoe, six parts of this system, three exoskeletons, and three boots and have the possibility of achieving nine different combinations of footwear.