There is ice on the windows, but you’re still lacing up your shoes. Frosty winter mornings out on the trail are even more fun when you’re wearing your Jack Wolfskin Argon Vest. The gilet is filled with high quality Microguard Superloft synthetic insulation. The synthetic fibre insulation is insensitive to moisture and delivers very good warmth-to-weight performance – the perfect alternative to down. The windproof and tear resistant Stormlock outer fabric shuts out the cold wind and boosts the insulation performance.