This is Montbell's "Light Alpine Down Pants Women's." I purchased these at a Montbell store a few years ago. I bought them for winter camping, but I never had the chance to go, so they've been stored at home. I've only worn them to try them on. *Includes stuff sack *Product tag not included The following is a quote from the website: ↓ These warm pants with a high down fill are perfect for wearing in tents or mountain huts during the cold season. The seat and knees, which are prone to friction, are reinforced with double-layered fabric, allowing them to be used as outerwear. Specifications 【Material】Outer: 20-denier Ballistic® nylon ripstop [water repellent finish, anti-static treatment] (Seat, below the knees) 40-denier full dull nylon taffeta Lining: 20-denier Ballistic® nylon taffeta [anti-static treatment] Insulation: 800 fill power EX Down 【Average Weight】282g 【Color】Black (BK) 【Size】M 【Compressed Size】Φ13 x 19cm 【Features】Downproof construction / Samue system / Zippered pockets (2 on the waist) / Stuff sack included