The fundamental characteristics of the 383 are its self-adapting plate and the double injection system which puts steam into direct contact with the leather. The 383 is particularly recommended for humidifying leather before springing and for coupling materials with reinforcement cloth. In fact the innovative double injection system solves all problems related to springing and/or coupling of the uppers. The machine is equipped with a personalized electronic board which allows for countless programming combinations, thus enabling the operator to soften without staining even the most delicate leathers such as vegetable tanned leathers which usually create a lot of wrinkles in the machining phase.