The bag is designed to come up to the neck and then I wear a Crestone hood or a hat in warmer weather. It's designed for someone 5'10", I'm 5' 11" but it fits comfortably. It does have an narrow footbox, I take a size 9 1/2 and if my feet were larger I would need the next size up.
The single layer loft is about 3 inches with the 3 oz overfill, 900 fill. I'll do a review once I've had it out on a few trips. The 7d is tightly woven and should also make a for a warmer bag which is what I wanted.