Icebreaker Men's Merino 125 ZoneKnit SS Crewe is a lightweight, technical base layer developed for high-intensity activities where temperature regulation and comfort are essential. The garment combines the breathable Cool-Lite blend with ZoneKnit technology, which strategically positions different material zones to provide optimal ventilation and support where the body needs it most.

The fabric consists of a lightweight mix of merino wool and TENCEL Lyocell™, delivering a cooling, quick-drying and naturally breathable quality that performs particularly well in warm conditions. The technical construction includes raglan sleeves for freedom of movement, an underarm gusset for increased mobility, and flatlock seams that reduce friction against the skin. A rear drop hem provides extra coverage during activity, while mesh zones contribute to improved airflow.

The result is a base layer that feels light and soft, and that effectively regulates body temperature – whether worn alone on warm days or as a breathable layer beneath outerwear.