Lightweight insulated jacket with Primaloft® 1 fill. This Primaloft insulated jacket is so light and packable (it squishes to grapefruit size) that we had to check the tag to make sure it wasn’t down. The lining and shell are Pertex Quantum, a silky ripstop nylon that sheds light precipitation and dries quickly. Yet this thin fabric isn’t wimpy; it held up to bushwhacking through scratchy manzanita and juniper in Arizona’s Coconino National Forest. Likewise, the insulation rebounded after being