I guess you can call it a collar, but in fact its just the hood rolled up to form an extended collar of an Artic smok issued in the Falklands, which was 3/4 length cold weather jacket, with quilted liner. The other version is what most squaddies call a sass smok, which is shorter in length than the artic version and made from lighter material for more temperate conditions.
First of all no offense intended...
woofer action "put_trainspotter_hat_on"
The Quilted parker (Cold Weather Jacket) was originally designed for armoured troops. It gained popularity among echelon troops quite quickly because of the lining and it was relatively hard wearing. It had the shoulder tags for rank slides. If you try rolling the hood of one of those you look like Quasimodo because of the quilting in the hood.
The Arctic Smock (Arctic Windproof) was designed as a combat smock for troops in the arctic, to be worn under the snow camoflage outer. It has a wired, extended hood (think Kenny from South Park), and rank slides front and rear in the middle of your chest and back (where they are on '95 pattern). It is light and quick drying, which made it popular with troops on the move. I have seen pics of Marines in the Falklands with this pattern on.
The 'SAS' Smock (I've no idea if this pattern has ever been issued as such) is an Artic Smock that has been shortened lengthwise, the back rank slide removed, the hood extension and wire removed.
Sass, or Special Air Sea Services, are perveyors of quality clothing and equipment (can I get a discount now) and do they're own branded version of the SAS type smock by adding improvements.
woofer action "take_trainspotter_hat_off"
Out of interest did RM's have tin pissers or Kevlar helmets for the conflict? I can't recall ever seeing a RM without his beret on...
Apetite now wetted, need MOD...