Ursuit Thermofill Heavy Undersuit

Thermofill is made of elastic and waterproof material, and provides perfect thermal insulation. It is made of a four-layer material with Finnfill fibers as the insulating layer, as well as a waterproof X-Tex menbran as an intermediate layer that the skin can breathe through. The outermost layer is an elastic and soft tricot, and the inner lining is fleece. The heavy model is designed to protect against extreme cold

The Thermofill insulation is the most important feature of this underwear. The Thermofill membrane has been developed by research institutes with the best reputation and the best manufacturers of insulating products.

The Thermofill insulation has a unique structure. The material retains its insulating properties even after being washed many times, and the Thermofill insulation does not break like so many other cotton insulations. It also does not become lumpy or flat when used after washing. The suit is still insulating even when completely wet. It has ventilation holes in the armpits and left sleeve, and both the inside and outside of the underwear are ventilated to give you control over ventilation during all phases of the ascent.

The suit has a zipper with two locks and a breast pocket with zipper, as well as large close-fitting pockets. It has an elasticated collar, sleeves and ankles, as well as a wide waist. Holes for the thumbs and a strap that goes under the foot make it easy to put on.