With time many things change. And it's right that it is so, because only in this way the products that work can still improve. We kept the sole in Vibram®, which guarantees a good socket, and added the shock-absorbing midsole and some functional details. Furthermore, the asymmetrical C4 tongue guarantees maximum comfort. The lacing system with X-Lacing® technology, two-zone lacing and mobile hooks allows you to set the shoe's fit according to the individual needs of the wearer. To support natural walk, we reduced the material used and applied a deep hook in combination with the FlexFit® system. The robust Nabuk leather is protected by a waterproof gore-tex membrane, so you can count on this model on average rigid in any weather condition. Weight: 1600 g / pair (UK 8) Vibram® soles AppTail II Working AS a Team, The Distinctive Design of The Sole Vibram® AppTrail II, ITS Expanded Contact Area and Dynamic Heel Profile Deliver Optimal Uphill and Downhill Performance. More ... Vibram® VIBRAM® rubber sole produced by the Italian company famous for its quality. 100% polyurethane (PU) midsole The polyurethane (PU) is a soft plastic that has excellent cushioning properties and is therefore mainly used for overstairs. Through the percentage of PU, the soles become lighter and flexible in their function. Inner sole approx. 50% Viscoelastic latex foam The viscoelastic latex foam has a special polymer that gives it a particular form of shape. As soon as it perceives body heat or pressure, the viscoelastic foam adapts perfectly to the profiles allowing a balanced weight distribution and a lower load on the foot. Approx. 40% Polyester Polyester is an artificial plastic fiber that is produced by oil. From a chemical point of view it is a polymer that can be worked to get many other different materials. Thanks to the flexibility from a chemical point of view, the polyester is light, dries quickly, it is not narrowed and has a high resistance to tears and rubbing. Approx. 10% Mesh The mesh fabric consists of many small meshes, normally polyester or nylon, and a technical point of view forms a grid that is made from connected wires to each other. Thanks to the particular processing technique, this synthetic fiber fabric is particularly transudant, absorbs moisture, it does not require a particular care, it is fresh and crumpling little. External material 100% Nabuk leather The Nabuk leather is a first flower type of leather in which the flower side is slightly polished, resulting in a velvety appearance. Nabuk leather stands out for its long life, robustness and open pores. Depending on the desired look, this type of skin can remain untreated or be oiled or waxed. GORE-TEX LINES MATERIAL 100% GORE-TEX The shoes equipped with GORE-TEX membrane