The two layers are sewn at together at the cuffs and skirt but the upper part of the hood is just connected with Velcro which allows me to get between the layers to fix anything that needs fixing.
As there is now a hooky and loopy side it was a simple affair to make a hood extension with opposite
Velcro strips allowing the parka to be used with or without the ruff.
Having said that, t was probably the most complicated and awkward item of clothing I've ever made and I certainly don't intend to make another so I made this one to last.
It's based roughly on the Sally Robbins pattern from the Conover's excellent book "Snow Walker’s Companion" but I adapted the design with a few of my own touches and based it around the cut of my wind shirt.
The general idea is that the sleeves are wide enough to bring your arms back into the parka and adjust your layers without exposing yourself to the wind. It can also be ventilated by just unhooking the belt and opening the neck gusset (as shown) to get a chimney effect if needed.
Obviously it's a bit warm at the moment to give it a proper testing but it certainly
seems comfortable and should work as intended. Making this jacket is part of my ongoing preparations for an Arctic trip in 2012 which I will be able to let you know much more about after the event.