Originally Posted by
DemostiX
This may be more than a full length UQ for you. Many of us rely on a pillow or pad that serves as a pillow for our heads and have UQ's go just to the neck.
As for fit to the BB, look at the UQ that Warbonnet Guy himself designed: A not-so-large partial.
Foot box in the hmmk or not, there is one in top quilts and partially-opened sleeping bags functioning as TQs. Most of us insulate the foot box of the hmmk with a soft pad inside the TQ inside the hmmk. So, no problem with fit.