The Sensor DF EVO functional top boasts one of the highest levels of versatility in its product range. It is made from Sensor’s Double Face two-layer fabric, which gives it two sets of different thermal properties, depending on whether you decide to wear it the usual way or inside out. The surface of the “plus” side is made of micro polyester silk, which is a great choice for warmer weather. The “minus” side is made of staple micro polyester, which is great for chillier weather. The difference in the thermal resistance of the two sides in laboratory condition was 3.6 °C.