Could you post a few pics of the pre-quilted P1.
The P1 you have pictured is a sewn-thru construction and should be used as a double layer so the sewn-thru lines would be in the center of the other.
I am wondering if the P1 is strong enough to be self sustainable? For my unsupported record attempt of the JMT, I am looking for an insulation I can use as a layer in its self, without fabric on each side.
I would have a base layer, whatever I hike in, the insulation layer, then a WPB layer, (drop-stopper).
The insulation would only need to last for 5 days and could have a skeletal fabric structure to hold it to the correct form.
If this could work, the weight of the gear without the fabric would be a great relief off of the base weight that would be carried 75% of the time any way.
The bottoms and top would need to be at least .6" of loft or an equivalent clo. The bottoms would need to stand up to 35* temps with lite weight patagonia under and the drop-stopper on top. The top will be a short sleeve patagonia shirt and a railraiders l/s shirt on the bottom, the drop-stopper on top and a 40" x 35" 2.25" loft down blanket on top
I currently have a bottom made with .6" Primaloft Sport and .85oz Ripstop. It comes in at 10 ounces, but without the fabric would be around 7oz. I am looking to get it to around 6oz and should be able to since the fit is too loose.
Bill, do you know if the P1 would work, or could you recommend which insulation would?