The OS Thermal Zip Neck Top is an ideal mid-layer to pair with a protective outer layer. The slim fit features a 4-way stretch thermal fabric to offer complete freedom of movement as a layering piece. With a brushed waffle interior the top is designed and engineered for the coldest conditions to provide warmth, wicking and breathability. 4-way stretch thermal fabric with a brushed waffle interior providing warmth, wicking and breathability. The interior grid structure enhances compressibility, airflow and drying time. The smooth outer face makes it perfect for layering beneath waterproof garments. Cut for complete freedom of movement. Pill resistant fleece. YKK front zip for ventilation. Discreet thumb loops to hold sleeves in place and reduce heat loss. Raglan sleeves for increased mobility and comfort. Machine washable. 95% Polyester, 5% Elastane
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