On Running Jack Dames

The On Core Jack Women's black/black L is a technical running jacket designed for performance during athletic activities. This black jacket in size L features On's proprietary CloudTec cushioning technology in the midfoot area, providing runners with responsive energy return and shock absorption. The upper construction utilizes engineered mesh inserts for strategic breathability and airflow management, complemented by a supportive heel cap and padded tongue for increased comfort during extended wear. The outsole integrates durable rubber elements in high-wear areas for reliable traction on various surfaces. Weighing approximately 280 g for size L, this jacket offers a streamlined fit suitable for training sessions and competitive runs. The design includes reflective details for enhanced visibility in low-light conditions, while the moisture-wicking fabric supports sweat regulation during intense activity. This model represents the successor to previous On running jackets, maintaining the brand's focus on Swiss engineering and precise craftsmanship in sportswear.