Perseverance Mills is a UK-based world-class company specialising in the weaving and finishing of lightweight high performance fabrics.

For 100 years Perseverance Mills have been producing fabrics for demanding applications - including balloon fabrics and synthetic parachute silks.

Using technology, perfected in industrial applications, the company now concentrates on producing the Pertex® range of fabrics for high performance outdoor equipment.

Pertex® is now the brand leader in Sleeping Bag casing fabrics.

What makes Pertex® products unique are their ability to manage moisture. Each square metre of Pertex® used in our products is made up of around 12,000 continuous bundles of fine yarn (each bundle contains 34 strands of yarn, each strand 10 times finer then a human hair).

The gaps between these strands are very small, small enough to block water droplets but large enough to allow moisture vapour out. The small channels (capillaries) between each of the strands draw moisture away from source spreading it over a large surface area using capillary action. Any moisture forming on the skin is drawn into the weave of the lining of the product where it evaporates and continues its journey to the outside without chilling the occupant.

FAQ

Q Why doesn't the pertex draw moisture from the outside and bring it into the sleeping bag garment?

A As long as the temperature inside the bag (normally body temperature) is higher the natural path of any moisture will be from the inside out.

Paratex from Pertex® is our brand name for any fabric we have had specially commissioned to fill a gap in pertex range whether our product calls for a lighter weight, higher strength, a fancy weave or specialist finished.