PriceBully via eBay offers this Thermos 33-oz. Stainless Steel Floating Insulated Bottle
, model no. 2595, for $18.29
with free shippping
. That's the lowest total price we could find by $4, although we saw it for $6 less during Black Friday week. It features a plastic shell with a handle, stainless steel inner bottle, and double-wall vacuum insulation.