The Thermowave Arctic women's long-sleeve shirt is a premium base layer designed to reliably tackle the most demanding winter conditions and extreme cold. Crafted from a high-performance blend of 95% merino wool and 5% elastane with an exceptional fabric weight of 265 g/m², it delivers unrivaled thermal insulation. The interior of the fabric is finely brushed, ensuring extraordinary next-to-skin softness while creating a cozy thermal air pocket that keeps you comfortably warm during skiing, mountaineering, or winter hiking.

Thanks to the natural properties of fine merino wool, this top offers outstanding thermoregulation and natural antibacterial protection, effectively preventing unpleasant odors even during multi-day use. The addition of flexible elastane provides full four-way stretch and unrestricted freedom of movement during all your athletic pursuits. Highly breathable material integrated on the back accelerates moisture wicking away from the skin, ensuring you stay dry and pleasantly warm regardless of the intensity of the ascent.

Featuring an anatomically contoured women's fit and weighing only approximately 220 g, it adds virtually no weight to your pack. It is equipped with a comfortable, soft mock-neck collar that shields the sensitive neck area from cold drafts, along with an extended back hem for optimal coverage during active movement. The flatlock seam construction effectively prevents chafing and skin irritation, while the practical hoodless design allows for effortless, bulk-free layering under fleece jackets and outer shells.