Engineered to perform across 4 seasons in the most testing mountain conditions, the Men'sPrism Jacket from Montane is packed with high quality Silver Eco insulation from PrimaLoft which powers effective heat retention, increases drying time and is compressible. This technical core is sandwiched between a windproof and water-resistant Pertex Microlight Ripstop outer and a PEAQ Synthetic lining which both aid comfort and protect the performance of the insulation.