ATEPA 3-in-1 Backpacking Sleeping Bag Down Sleeping Bag 44.6°F to 10.4°F

I really like the system but was disappointed with the insufficient amount of actual fill material. The photographs used in your advertisements show a puffy bag when in fact, when laid flat, much of the bag quilted areas were flat, exterior fabric was literally laying directly against the interior fabric. Holding that bag up to a large picture window, you could clearly see the areas that had little or no filling in them. I tried sleeping in the bag in 40° and it was uncomfortably cold. Since then,I have added 320 grams of 700 fill down to the bag and it is wonderful now. Puffy and warm.