If you've already purchased the garment does it smell like the store where you bought it or have a "new clothing" smell ? If so , wash it in unscented detergent of your choice and air dry it outside where it won't pick up too much smell . Don't waste your time trying to"reactivate" it in your dryer , the dryer will never get hot enough to do that .

If you haven't purchased them yet I'd search some of the other ScentLok/activated carbon related threads on these forums before investing that kind of cash . You'll quickly find what a waste of money they are and why . They are a temporary solution at best , and a very expensive one .