The Formula Jacket is crafted for timeless performance on the slopes. It is crafted with our KJUS FAST Thermo Core™ stretch insulation and four-way stretch waterproof fabrics for uncompromised warmth and freedom during your run. A thermoregulating graphene lining traps and disperses heat across the garment, and KJUS AC-Vent™ technology on the forearms offers additional temperature control. This classic KJUS style is ready for a new season on the slopes.