Boot made of waterproof and breathable outer micro fiber making the boot always dry. Reproduces the characteristics of natural skin in a micro fiber getting great comfort, it is also antibacterial, washable, lightweight, ecological and highly resistant. Exceeds the standard UNE-EN ISO 20344: 2011. Interior lined with breathable fabric and antibacterial, part of the heel reinforced with a rigid plastic piece. System of closing by means of steel cable regulated by mechanism of high resistance “Lacing System” and placed in such a way that regulates the frontal part of closing like the part of the ankle replacing thus the function that the cords do in all their extension and getting a great speed in the buckling of the boot. The mechanism that tightens the cable like this one are easily replaceable by the same user.