Size Small, Medium. SEATTLE SEAHAWKS Nylon Systems Jacket. Set is made up as a full Zip LIME GREEN Jacket and also a BLUE Vest both have Sewn Logos on the chest. The jacket & vest both have 2 exterior pockets. This is a medium weight jacket. Logos are meticulously sewn on. Measurements across chest S: 22 M: 23": This is a very comfortable systems jacket. It's light weight but very warm. Nylon is very durable and very comfortable. This is Men's sized Looks great on woman.2