S 2 is your full-size runner for the majority of conditions. This is the largest sail in your downwind inventory. You will be able to use this sail from 125° TWA to 175° TWA in anything from 10 TWS to 22 TWS. So, this is the sail that covers the biggest range of conditions. It would be the sail to include in your inventory as the first downwind sail. A truly all-round runner. Size factor: 100%.