This is a Montbell parka. The stuff sack has been lost. It's a size M, but it's a slightly roomy model, so you can wear an inner down jacket or a thin fleece underneath. Depending on how you wear it, it can be used in winter. You can easily throw it on over an inner layer in the spring and autumn. I think it's very versatile. This parka offers outstanding versatility, combining a windproof and water-repellent, smooth shell material with a warm and breathable lining. It can be used as a mid-layer in winter mountaineering, or as an outer layer for spring hikes and high-altitude summer activities, making it useful throughout the year. It has a relaxed fit, making it easy to wear as an outer layer. Specifications: Material: Shell: 40-denier full dull nylon taffeta [water repellent finish] Lining: Climaplus® mesh [polyester (sweat-wicking)] Average weight: 303g