Integral Designs North Twin/Mr. Jordan

You should give Fanatic Fringe a call or an email. They will substitute Primaloft over polarguard I am sure.

If not, you can't go wrong with the Integral Designs North Twin. It is an exceptional bag.

I’ve used the North Twin in size wide, wearing a DAS Parka, polarguard pants and down-fill booties, down to about -5F. I was quite comfortable, despite a fair amount of dampness.

I think Ryan’s post here offers his most detailed comments to date about temp ranges for the cocoon quilts. Maybe you’ve already read this. Indications are that the UL180 and Pro90 quilts *together* make a good 10-15F setup, with cocoon hoody and pants. 0F might be do-able w/ true winter clothing and other gear, IF the fit works out. The clothing items I mentioned above layer nicely for me inside a Nunatak Arc Alpinist, except that the footbox is pretty snug for booties. But the Arc Alp has a couple more inches of shoulder girth than the Cocoon Quilts, and I’m a pretty skinny guy to begin with.

Just my 2 cents. I’ll be interested in what others have to say.