Potentially a great sleeping bag...however, like most of Core products, they have a "clever", but useless "gizmo" added to it. In past 30 degree bags, it was a silly permanently attached pillow, which, while somewhat annoying, was worth the hassle given the bag's overall comfort. On this newest bag, the "gizmo" this time around is a VERY annoying extra "snap down" flap on the other side of the bag. Because, you know, simply zipping the main zipper a little lower is just SOOO much hassle for millennials. So basically, you have an extra zipper in your back all night and it completely ruins the experience of zipping two bags together (then you have two annoying useless zippers all night). I just wish Core (and other millennial-managed companies) would focus on making quality products and not constantly try to add mostly useless gizmos that interfere with a product's utility. In fact, I'm probably going to return these sleeping bags as unusable for their intended purpose.
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