V-Warm SFT Arctic Fleece

The ultimate thermal turbo - SFT undergarment ready!

The V-warm concept

Already at the first touch it becomes clear that the Kallweit Arctic Fleece thermal underwear combination has nothing in common with ordinary thermal underwear. 

The highlight: the six heat zones. With this V-Warm technology, cold-sensitive body areas are protected separately against the cold. The ingenious system ensures excellent thermal comfort without restricting freedom of movement. The flat seams and very perfect finishes complete the wearing comfort.

What's in the packet?

1x shirt in the chosen size

1x pants in the chosen size

Combinable with SFT undergarments

The V-Warm SFT Arctic Fleece is designed specifically for the Kallweit SFT underwear line, but performs just as well on all other underwear or other sports.

V-WARM SFT Arctic Fleece

the ultimate thermal turbo - Kallweit SFT undergarment ready!


With SFT Condensation Control Technology, moisture is transported outward with Arctic Fleece thermal underwear.

Movement Zones

The movement zones guarantee maximum freedom of movement.

Men and Women models

Specially designed measures for women and men in all standard sizes.

Ultraflat Technology

Ultraflat Technology - ultra-flat seams for maximum comfort.

Maximum heat comfort

Maximum warmth - thanks to the soft and thick SFT Arctic Fleece fabric.

Comfort Stretch

Comfort stretch system on all finishes for best comfort.

6 revolutionary heat zones

6 revolutionary heat zones, equipped with the innovative V-Warm technology.

Extra men's model

Men's model with engagement.

Kallweit Online Shop

Our online store has all products and sizes available for you 24/7.