Well it depends on your body type, but I would go with a Large or XLarge.
Fully extended, the crampon is long enough, but the heel guide prongs are not wide enough. You would have to bend them out to make it fit.
Thanks for your question, Nick. All of the sizing that is on our website is in US sizing. The sizing difference between the two is enormous. The fit of the Expedition is "relaxed" and designed to be worn over many other layers in extremely cold and brutal conditions while the Citadel is "trim fitting" and designed to be worn closer to your body in milder (compared to the arctic) climates.
The hood is not detachable, but it does have a two-way zip for the front zip.
It weighs just shy of 5 lbs.
According to the Canada Goose sizing chart attached to this item on our site, a person with a 50 inch chest would need a size XXL (2XL). All prices are in US Dollars. We will not be getting any more of this item in that size until Fall of 2014. I apologize for the inconvenience. If you would like to receive an email, you can click the "Don't see your option" link under the size options on the product and put in your email address, or you can call our customer service department around July of 2014 at 1-877-883-6276 to place a backorder for this item and see when it is coming in.
We have more black size small being shipped 11/15. Keep checking back! They go fast!
I apologize, but I don't think I understand the question. Can you be more specific as to what you mean by "marking"