The Special Six Shirt is a slightly longer version (2"/5cm) of the Mountain Shirt and so suitable for taller people.
The waist pockets are not as high and there is no crutch strap. A strap inside the pocket tightens the shirt across the tummy to give extra warmth.
It uses the same tough Pertex Classic (Pertex 6) for the outer fabric.
Wear it close fitting and next to the skin. It is made from fibre pile (quicker wicking than modern fleeces) and what was known as Pertex 6, the heaviest duty Pertex made by Perseverance Mills. It is the same fabric but is now called Pertex Classic.
700g approx.