The wind's in your face, and your heart rate is rising as you pick up the pace. The ULTIMATE ARGON JACKET is designed to support and enhance your physical performance in situations like this. The jacket is filled with MICROGUARD SUPERLOFT. The synthetic fibre insulation feels like down and delivers very good warmth-to-weight performance. The body mapped design ensures exceptional breathability where this is most needed and makes the jacket ideal for highly aerobic activities like ski touring and speed hiking. The robust STORMLOCK shell fabric provides an effective barrier to the wind. The ULTIMATE ARGON can be layered up or worn as a standalone. In wet weather you can wear it under your hardshell.