A high-safety winter shoe from the innovative RedLion line of the U Power brand is the Lift S3 SRC. It is a shoe treated in all its aspects, from aesthetics, to safety at work, to comfort. All elements go hand in hand, to ensure that all features intersect and function. Starting from the outside, the shoe has the upper in soft natural Nabuck leather, extremely water-repellent, to ensure that the foot is as hot and dry as possible. The bellows is in padded nylon, with the "no stress" collar to ensure that the ankle does those damaging movements that would create distortion, but also for greater comfort, especially when worn for a long time. The inner lining is made of 3D Wingtex fabric, whose weave creates tunnels through which the air can pass avoiding the stagnation of humidity. Also the tip and the foil have been chosen for their breathability as well as for high safety. So the tip is AirToe Aluminum, 54 gr, so ultra-light and very comfortable. It has the characteristic of having asymmetric pores and being covered by a transpiring membrane that allows the elimination of sweat, turning it into water vapor. Instead, the foil, Save & Flex Plus is made of anti-puncture fabric, sewn directly to the upper so as to 100% cover the sole of the foot, ensuring protection from perforation up to 1100 N. The insole is removable, Polysoft anatomic and soft, with different thickness for greater comfort, durability and cushioning; moreover it has the ability to keep the foot extremely dry thanks to the pores present on it. The sole is in double density Polyurethane with the innovative Infinergy® technology: the polyurethane in the midsole is soft and has the function of making the walk comfortable and comfortable; the polyurethane in the tread, instead, is more compact and hard because it has the function of making the shoe snug, anti-slip, anti-oil and anti-static. All this also contributes to the tread design, studied in detail even to ensure excellent cushioning. The Infinergy® technology mentioned above is none other than the new and unique U Power technology: a midsole composed of thousands of capsules flattened with anti-fat gel inserts. This allows the shoe to be softer, lighter, more flexible and more elastic, as these capsules have the ability to store the energy that is released in the act of resting the foot on the ground, to release it when the foot lifts up. heel to repeat the movement of the walk. Thus the worker makes less effort during the walk which, moreover, will be extremely comfortable. Moreover, the sole is more resistant and durable, even to differences in temperature.