These are Workman 2-way climbing pants. I bought them for my child, expecting them to be a bit big, but they fit surprisingly well. They were only worn once this season, and it looks like they'll be too small next season, so I'm selling them. I couldn't find them on the official website, so they may be discontinued, but please refer to other sites for more information. https://magazine.yamarii.com/article/7846/