The ROUTEBURN JACKET is almost as warm and light as a classic down jacket but is made of recycled, synthetic materials. The MICROGUARD SUPERLOFT synthetic fibre insulation delivers very good warmth-to-weight performance. It also has good lofting capability, which makes the ROUTEBURN JACKET very comfortable to wear. Even if it gets wet, it loses none of its insulation performance, and it dries out again quickly. The STORMLOCK outer fabric is breathable, light and windproof