I purchased this at a GU store last year. Product number: 231-351711 (43-02) The shoulder straps can be removed with buttons (see photo 9). I only tried it on indoors after purchasing it, and I have never used it outside. I am selling it because it doesn't suit my body type and I never had a chance to wear it. I think it's in very good condition. As far as I can see, there are no stains. I have checked it as carefully as possible, but there may be minor oversights. Please purchase only if you understand that this is a used item. There are no smokers in my household. I do not have any pets. I do not accept price reductions, returns, or complaints. Color: Navy