Synthetic Fill Jackets
When it is seriously cold, turn to the serious warmth of an insulated jacket. Synthetic jackets are a must for cold climbing trips, hanging out in camp, or any other activity where you need to retain as much body heat as possible. Today's men's synthetic jackets represent years of evolution and are light-years ahead of what we had just a few years ago. These jackets provide phenomenal warmth to weight ratio and synthetic fill jackets provide warmth even when wet. Synthetic insulation such as Polarguard or the super light PrimaLoft provide unprecedented warmth-to-weight ratios and repel water.