Why a transport sled:
I'm currently in Japan for the winter season and am exploring the northern island of Hokkaido at a leisurely pace. In the Alps, I like to go on multi-day tours with overnight stays in huts. Because I enjoy this so much at home, I did some research here and found what I was looking for. The information about the huts in English is rather scarce and is mostly based on one or two internet sources. I would like to thank Hokkaido Wilds, who have translated a lot of the information that can only be found in Japanese with great effort and care and are true explorers on Hokkaido. But to get to the point: Huts here are often more rudimentary than in the Alps. Instead of beds, there are only the traditional tatami mats, blankets are not available and you should bring your own wood. With a thick sleeping bag for sub-zero temperatures, a sleeping mat and wood, your luggage will quickly become heavier than usual.
Luckily, the mountains here aren't that high and it's more the distance to the hut that needs to be covered than the metres in altitude. And that's when we came up with the idea of the sled.