Steripen Classic 3 water purifier. I bought this from new at REI a couple years ago and it has been in my closet since. Has never been used, nor put in my pack or even taken out of my house. Comes with the pre filter and everything it came with originally including the box. Will not ship with batteries. TYD $60 PayPal G&S (I'll pay the fees) via USPS Priority Mail. Retail is $90 for reference.