Thorough incoming goods inspection using leather as an example
The leather we use at HAIX is different from the conventional leather usually used in shoe production. We exclusively use European bullhide leather from certified suppliers. But why bullhide leather? It has a different structure to conventional cowhide. This is due to the fact that female cattle get pregnant, causing the leather to stretch and contract again and again. This has the disadvantage that the shoes fit well when you buy them, but after intensive use they can widen enormously and no longer offer the perfect fit.
The quality of the leather is ensured during the incoming goods inspection using the latest testing and inspection techniques. First, the thickness of the leather is measured. The optimum thickness for our shoes is 2.5 mm to 2.7 mm. Basically, the harder the material, the more durable and robust the functional shoe will be in the end. To ensure waterproofness, the leather is hydrophobed. Hydrophobing means that the leather is made water-repellent through a special tanning process. As a result, the shoe does not absorb water as quickly, retains its shape longer and is less susceptible to cracking or rapid ageing. The hydrophobicity is verified by means of a wetting test. This involves dipping a piece of leather in water. The shoe must not soak up the water. Only then is it considered to have ‘passed’ the test. The look of the bullhide leather also plays a key role. Does it have holes or any unevenness? Are the different layers or the colour peeling off? The leather is only passed on to production if its look is flawless.
To ensure that heroes around the world wear the highest quality on their feet, we constantly check our materials for quality assurance. Only if a shoe is of high quality can it fulfil its tasks and ensure the safety and comfort of our heroes and heroines in extreme situations.