When the line blurs between work and the rest of life – as it does in Alaska – and the weather's below zero for months on end, Polartec® Power Stretch® is the layer to live in. These are the only base layer pants we offer reinforced with Polartec® Hardface® at the knees and designed to accommodate Duluth Trading knee pads. 4-way stretch moves with you, never holds you back. And the polyester/spandex fabric wicks sweat while feeling amazingly comfortable and packing a lot of warmth for its weight.