On hot and humid days, you need a jersey that works as hard as you do. Soaring temps rob your energy and sweaty gear is uncomfortable. The Women's Flexair Delta™ improves riding during the warmer months using Polartec® Delta™ fabric - an innovative fabric which acts like mini radiators to keep you cooler, drier and comfortable. Laser perforated vents throughout the jersey add additional airflow for even more warm-weather comfort. The jersey has a contoured fit with 4-way stretch for maximum mobility. It's a jersey that's so light and breathable you might forget you're wearing it.