Since your core is central to your performance, it makes sense to keep it warm. A cold core can lead to cold arms and cold legs, which in turn, makes you miserable and inept to power through your adventure. Avoid this mishap in the Berghaus Women's Spectrum InterActive fleece. Thanks to its AWL 200 fleece fabric construction, it's super soft and cosy and since it's anti-pilling, you can be confident it'll go the distance. Three external zipped pockets give you ample room to stow your GPS and shades whilst a full zip prevents heat from escaping. Retaining most of its warmth when wet, you needn't worry about its performance in a light shower and since it can be layered with other gear in the Berghaus InterActive range, it's a real investment buy.