Originally Posted by Peter_pan
Grizz and BB58,
When the BMBH with UQ, esp the Mt Washington, when suspended IAW the directions, series there should be no gap between all points/areas of load and the UQ...In our experiance any gap, usually minimal to none, is well above the body area.
Yes, the gap I am talking about is very minimal and more importantly well above my body, and may also vary with how I have adjusted the end straps. It's always minimal regardless. Which is why I was not sure if it even affected warmth, with this right against your back/butt design. I had some concern about cold air dropping down into that gap and maybe managing to contact some body part, though I have never felt any actual cold. Obviously side gaps would be more of a problem with a design where a gap, even a tiny one, might exist under your back, and the cold air could drop down under neath there. But this design would not really allow any cold air to get underneath your body.