I cannot get my Hotspot Blanket back into the storage bag.

Lay the Hotspot Blanket on a flat surface. Fold it lengthwise into 3 equal parts (as wide as the storage bag). Roll up the Hotspot Blanket tightly and pull the storage bag over the roll.

If you pinch the rolled up Hotspot Blanket between your legs you can pull the storage bag over the roll more easily ;-)