This is a Patagonia boa jacket. It will keep you warm even on cold days. According to the website, the XL size has a total length of approximately 66cm, a body width of 51cm, a shoulder width of approximately 42cm, a sleeve length of approximately 61cm, and an armhole circumference of approximately 48cm. The XL size is also recommended for adult women. It is also polyurethane-coated and treated with durable water repellent. Machine washable.