- Ultra-warm – The women's base layer features a dual-layer fabric with an ultra-warm, brushed interior and a mock neck for added coverage and warmth.
- Strategic ventilation – With mesh underarm panels, the thermal top gives breathability only where you need it, so you stay warm and dry.
- Sweat-wicking – Even in fast-action, stay dry with the winter running top's sweat-wicking, fast-drying material, which features anti-odour technology.
- Streamlined-fit – The women's thermal top's fitted cut isn't too tight or loose. It sits against your body like a second skin, ideal for layering.
- Material and fit – Under Armour Women's UA Authentics Mockneck, women's base layer top, women's polo neck, material: 87% polyester/13% elastane.
Women's Base Layer Tops
Under Armour Women's UA Authentics Mockneck, Ultra-Warm Polo Neck Top for Women, Thermal Long Sleeve Running Top with Anti-Odour Technology
£30.20 (as of 05/12/2026 16:13 PST - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)
Ultra-warm – The women’s base layer features a dual-layer fabric with an ultra-warm, brushed interior and a mock neck for added coverage and warmth.
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