MICRO REPS WITH PRIMALOFT® INSULATION TECHNOLOGY: Parka in a military specification Polyester / Nylon Rep. Weft yarns, with a thinner diameter compared to warp yarns, allow the fabric to be tightly woven for a strong compact fabric to the wind. The garment is padded with a PrimaLoft® layer, a unique blend of ultrafine fibers, which provides exceptional insulating ability. PrimaLoft® is developed to stay dry even in wet conditions. Offers the highest heat-to-weight ratio of all synthetic insulation. A special agent sprayed on the finished article makes the piece fall resistant.