Hi Nurb,
I probably should have picked a different example than the self-inflating life preserver. -The product I am developing doesn’t need to self-inflate. The life-jacket is just a good reference for size and complexity.
These inflatable backpacks would also be a fairly good comparison in terms of complexity.
http://www.inflatable-toys.com.cn/backpacks.html
So far this company seems to be one of the better options in North America - they also make those inflatable costumes you mentioned.
http://publiairusa.com/
Another option I am looking into is manufacturers and repairs of inflatable boats - I am looking at a bit more of an industrial application so the tougher vinyl might be better suited.
Thanks for the help!