Firstly, the quality of the product is second to none. I must admit I have not used it in an extreme location yet! But in sub zero conditions in remote Northumberland it was extremely warm and dry. The fit is excellent, im a 45 inch chest and the large is perfect. The price is a high, but I wanted to purchase a British product that was both unique and high quality, This is it. Packaging was fantastic and the little touches such as the hand written thank-you matter. In summary beautiful product from exciting British brand. Will be buying more items from them.