The Thermowave Originals women's long-sleeve base layer top is an essential first layer for all winter sports, cold-weather running, hiking, and dynamic outdoor activities. It is made from 100% functional polyester with a fabric weight of 180 g/m², providing optimal thermal insulation at a minimal weight of only around 155 g. A special knit structure traps warm air close to the body while effectively wicking excess moisture away to keep your skin dry even during intense exertion.

The shirt features exceptional 4-way stretch elasticity, which, combined with ergonomic raglan sleeves, ensures complete freedom of movement. The anatomical women's cut fits snugly to the body, while an extended back hem keeps the lumbar area reliably protected from cold air drafts when bending or carrying a backpack.

Comfort during multi-hour or multi-day wear is enhanced by soft flatlock seams that prevent chafing and irritation of sensitive skin. The fabric is treated with an advanced silver ion antibacterial finish (SILVERPLUS®), which effectively prevents bacterial growth and odor buildup, keeping the garment fresh for longer.