does this pack have any sort of stiffening...
does this pack have any sort of stiffening sheet in the back panel? i'm chasing a small pack that will carry a shovel, probe, bit of food & water, extra layer for day from from a basecamp but can still be rolled up tiny to fit in the top of my touring pack for going in and out
Don't see one in BD's specs, nor are there any rigid stays. While not specifically a winter pack, have a look at Marmot's Kompressor Plus. It might suit your needs, and has a thin removable closed cell back pad and stows away into it's own lid, making it tiny when packed away. Pretty slick little unit that I've been contemplating for myself for about the same purpose. Hope that helped you out.