Some info for you guys, I bought an auto inflator from west marine around $100 a few months ago and the compartment that I kept it in when not in use condensates over periods of non use and caused the auto inflator to inflate. I think the recharge kit was around $15. If you buy a manual inflate DNR told me that it must be worn at all times. im sure the prices I gave are high as im a compulsive buyer, hope this helps.