I always use my WM bags for camping around here, and I'll have to tell you that the Slick was just too narrow around my shoulders. I don't remember the size I have, but I do know that it never got close to zero while I was camping, thus the temp rating (0) was never tested. I came away from the sleeping conditions with two salient thoughts: 1. Use the WM bag next trip, and 2. consider the noise that a NeoAir pad makes, and the sleep deprivation you may inflict on the tent-mate
