Hennessy Double Bubble Radiant Pad
Tried the HDBR Pad as a spring / summer setup (low 60) with my 45 degree bag. Tried the bag first without the pad and I was a bit cool. Added the pad after about 15 minutes and immediately felt the warmth. Shoulder width is perfect. Didn't slide, but I still plan on using bag cords to fix it in place under the bag. Will use it as a Spring / Summer pad and as a double to my colder setup when the temps really drop.