PrimaLoft® Sport, consisting entirely of polyester fibres, perfectly combines high-performance insulation with high thermal values. This technology uses extremely fine fibres with varying diameters for an above-average performance. The specially treated ultra fine fibres serve to produce a water-repellent, insulating structure. At the same time, the varying diameters of the fibres, ensure great loft. The low-maintenance PrimaLoft filling has demonstrated superior water-repellence when compared with other synthetic or natural fillings and is always warmer, whether wet or dry.