If you kids would take a break from peeing in each other, I have a dumb question I'd like to ask.
What exactly is a bivy bag, what does it do and what is a "good" one vs junk?
Is it something like this?
http://www.moosejaw.com/moosejaw/shop/product_Terra-Nova-Survival-Bivi_10215878_10208_10000001_-1_