I just used my new liner at a week-long Girl Guide camp (I live on the southern west coast of Canada) and overall it worked well. It packed down tiny, added a surprising amount of warmth and cozyness to my sleeping bag, made me feel like I was protecting the bag from my not-so clean feet each night, and I love the colour. My sleeping bag is wide for a mummy style bag and I felt that the liner was actually a bit narrower than my sleeping bag in parts, but not excessively so. It did make getting in and out of my bag a bit more challenging, but that would be the case with any liner, and I did appreciate the baffle-ish bit of fabric that expands the opening on one side. I worry a little that the fabric is slightly too lightweight to hold up to the amount I sometimes move in my sleep, but time will tell on that front. Overall I’m quite happy with my purchase.