Keep out the cold weather in style with the Polar Hybrid Down Jacket. In a longer length for added cover, the jacket is fully waterproof with taped seams and padded with down to provide premium warmth - just what you need for the winter. Length (approx.) for size 12: 97 cm. Fill Power Rating 600 - Higher fill power = warmer item. The measure of the loft (fluffiness). The higher the rating, the more air trapped per ounce of down allowing a higher level of insulation