I was just wondering if anybody has had experience with an event down sleeping bag. I know Feathered Friends can make down sleeping bags with event outer shell for waterproofness. I am thinking an event outer shell on a down sleeping bag could replace having to use or bring a bivi sack against rain splash or condensation to use inside a tarptent. Currently, I bring a bivi sack with me to use with my down montbell bag. I will only use the bivi sack inside my tarptent if I encouter rain or lots of condensation in the tent. It seems to me that an event shell on a down sleeping bag could replace having to bring a bivi sack. I would prefer not using the bivi sack inside the tarptent. Any thoughts on this would be greatly appreciated………Rich
