The main feature of these pants is that they feel like you're wearing a sleeping bag. High-quality PrimaLoft insulation is used inside to ensure warmth. Furthermore, the pants use a material that is both waterproof and breathable, making it easy to regulate body temperature. They are comparable to goose down in terms of warmth and are widely used as a synthetic insulation that retains heat even in the presence of moisture. Unlike down wear, there are no feathers to come out, and they are easy to care for. They can be washed in a washing machine, are lightweight, and have a soft texture. You'll be able to stay comfortable even in cold environments. These pants are perfect for various activities in cold regions, such as winter camping, outdoor activities, fishing, motorcycling, skiing and snowboarding in the snow, and glacier exploration. You can move freely without being bothered by the cold. Also, although they are for extremely cold regions, the design is simple and stylish, so you can wear them fashionably in the city. 【Size】MEDIUM-REGULAR (M-R) 【Condition】There is a frayed area on the left hem (see image 4). Otherwise, I think it's in good condition without any stains. I bought it at a used clothing store, but I don't think I'll use it, so I'm putting it up for sale. Please refrain from purchasing if you are nervous about used items.