That is the "storage" shelf life. If you were to pack it up and not use it for 7+ years, the inner bladder will get brittle from dis-use. Same for the corrugated inflator hose. There are also issues with the o-rings and such inside the inflator mechanism. Using it actually helps keep it in condition.grassyknoll:In the Zeagle owner's manual it mentions that the "shelf life" of their BC is 7 years . So I'm wondering what the reality is, mine is at least 5 years old and looks almost new, ...?
BTW, the inner bladder and hoses are both pretty easy to replace.
more BTW, it's not just Zeagle. The general storage life of any BC is 7 years.