multifunctional equipment for transporting cargo in the mountains

I am developing a sports equipment that, in combination with downhill skis, creates a sledge-like product for transporting cargo and for downhill riding. In the course of designing the product I added the function of a backpack frame, which is created by waist strap and shoulder straps, which are intended for pulling sleds. In the development process, I focused on compatibility with as many downhill skis as possible, easy and safe handling, and the ability to easily and quickly adjust the product even in difficult mountain conditions.