Arc'teryx Kyanite Womens Baselayer Bottom 2026

Versatile, durable Polartec® Power Stretch® Pro base layer pant for mixed output in cold conditions. The warmest base layer pant from Arc'teryx.

The Kyanite Baselayer is made for cold days and mixed output. On the move, the Polartec® Power Stretch® Pro stretches for outstanding freedom of movement. During rest phases – or when it gets really cold – the fleece’s soft brushed interior traps heat to keep you warm. The fleece’s durable nylon outer has a smooth face for comfort under layers, and a zippered thigh pocket secures small essentials.