Arc'teryx Kyanite Baselayer Crew Neck W women's thermal long sleeve shirt

Arc'teryx Kyanite Baselayer Crew Neck W is one of the warmest base layers from Arc'teryx, ideal for cold days and activities with frequent breaks. In motion, the Polartec Power Stretch Pro fabric ensures maximum freedom due to its elasticity, while during rest phases or on colder days, the soft brushed interior retains heat, ensuring thermal comfort. The durable nylon exterior, with a smooth surface, offers comfort under other layers, and the thumb loops keep the sleeves in place.

The garment is lightweight, warm, and comfortable, with cuffs, hem, and collar finished in durable elastic Tanica fabric. The Polartec Power Stretch Pro fabric combines a durable nylon surface with a brushed polyester interior made from recycled content. The articulated construction and raglan sleeves enhance freedom of movement, while the chest pocket with laminated zipper offers practicality. The garment meets bluesign criteria, contains recycled materials, and is treated with Silvadur, an anti-odor biocide product. It complies with PFAS regulations and has a fitted design.

The body fabric is Polartec Power Stretch Pro at 248 g/m², composed of 53% polyester, 38% nylon, and 9% elastane, with fiber and dye origin in the United States. Care instructions include machine wash at low temperature, air dry, separate washing of dark colors, no bleach, ironing, dry cleaning, or fabric softener.