http://www.bodibag.com/

I ordered it in 200 weight fleece and had them add wrist cinches and a pocket.

I think when coupled with the Hilleberg Big-Anorak its a good combination for the trunk, backpack, kayak, airplane,etc.

http://www.backcountrygear.com/catalog/tentdetail.cfm?PRODUCTS__productID=HL1080