Using this Alp Racing ski mountaineering harness is easy. First, adjust the waist belt to fit your waist size between 82 - 92 cm. Make sure the pre - threaded buckle on the waist is secure. Then, put your legs through the leg loops and adjust them to the size of 59 - 64 cm. The single tie - in point can be used to attach your necessary equipment. When it comes to packing, just fold it up and it'll shrink to the size of a small fist for easy carrying. As for maintenance, after each use, check for any signs of wear and tear on the webbing, especially around the reinforced single tie - in point. If it gets dirty, you can gently clean it with a mild soap and water. Store it in a dry and cool place to keep it in good condition. Remember, this harness is certified according to UIAA and CE norms, but always double - check its integrity before use in a real - world ski mountaineering situation.