Katadyn VARIO Water Filter, still in the box. This version, http://www.backcountryedge.com/katad...utm_medium=cpc is adjustable, with an output of up to 2 liters per minute. I got this for my husband for his AT trip, but he changed his mind about using it, ( he is trying to be a gram weenie) and I couldn't get back up to the store in time for a refund. We paid $89.99, happy to sell it for $60, shipping included. .......
Also might be willing to trade for some extra goose down someone might have.
Jenny (Adam's wife)
Edit: The wife wrote this up...The filter was opened to check it out but it has never had water through it.