The Finnfill insulation is the most distinctive property of X-Tex Heavy Finnfill underwear

 Finnfill membrane is developed with the most renowned research institutes and polymere manufacturers. The structure of Finnfill insulation is unic. The material does not lose its insulation capacity even after many times of washing. The Finnfill insulating material does not break up like most cotton-wool insulating materials, and therefore it does not either get lumpy or flattened during use or washing. The material also keeps the main part of its insulation capacity when completely wet.

The isolation of X-Tex Finnfill is measured in international Clo-units that shows the real isolation of the suit. In heavy modell the clo grade is 1,97. The breathable and watertight structure of the suit is patented.

The suit has for example vent holes in the armpits and on the left arm assure the free circulation of air inside and outside of the underwear, and allows air control of the dry suit at any ascent speed, zipper with double locks, cheast pocket with zipper, large thigh pockets, elastic fabric in collar, sleeves, anckles and a wide waist band. Thumb loops and leg retainers eases dressing.