PrimaLoft® ThermoPlume® is manufactured with small, silky plumes of synthetic fibre that mimic the lightweight warmth, loft, softness and compressibility of natural down. PrimaLoft® ThermoPlume® fibres are water resistant so they maintain warmth, even in wet conditions. Made from 100% recycled content, PrimaLoft® ThermoPlume® provides a vegan alternative to down.