Ullfrotté Original is the material developed by Woolpower AB in Östersund in the early 1970’s in collaboration with the Swedish military, scientists, doctors and survival experts. The textile is highly wear resistant and consists of fine Merino wool, polyamide/polyester and air.
ULLFROTTÉ ORIGINAL IS 80% AIR
The material is knit so that one side is smooth, and the other has terry loops. The lofty terry loops, in combination with the crimp in the wool fibers, creates a knitwear capable of trapping a lot of air. Up to 80% of the material actually consists of air, which means that the material has an excellent capacity to trap body heat. The more air you can keep still around the body, the more heat you can retain.
Air does not to any large extent transport heat away from the body, but textiles do. Ullfrotté Original’s lofty knit has few contact points with the body, which reduces the number of points where body heat can be wicked away.
The permeable Ullfrotté Original material easily lets moisture escape from the body. As you become hot and you perspire, vapor pressure builds up inside your clothes. The moisture molecules strive to get outside where the air is colder and the pressure lower. If the material is loose and the fibers have the right properties, they will help transport moisture away from the body.
The soft terry knit surface of Ullfrotté Original can easily be worn on warm skin to maximize body heat retention, while simultaneously helping to wick perspiration away from the skin. Ullfrotté Original retains body heat, even when wet.
MERINO WOOL FROM ARGENTINEAN PATAGONIA
Merino wool is known as a very fine, soft and crimpy wool and is perfect for garments worn next to the skin. The wool used in Ullfrotté Original is 22 microns, meaning that the thickness of the wool fibers is 22 thousandths of a millimeter. This results in comfortable wool that is also strong.
THE MATERIAL IS HARDWEARING
Wool is a material with excellent properties but its wear resistance is not optimal. In order to add maximum wear resistance to the material, the wool has been mixed with one third synthetic fibers. The majority of the Merino wool is closest to the body while the polyester is placed on the outside for the greatest wear resistance.
Ullfrotté Original – The material
Ullfrotté Original is knitted on specially designed machines where everything from the size of the terry loops to the density of the stitch is carefully tested. Each garment part is knitted on circular knitting machines and comes out in tubular shape, completely free of seams that can both abrade and break.