Diehard fans had been asking about bringing back Four Loko Green Apple for quite some time. We wanted to bring it back, but with a twist. Four Loko Sour Apple is the first sour out, and our second 14% flavor. Tart, then sweet, then smooth, Four Loko Sour Apple is unlike anything else on the market. Diehard and recent fans alike will love our newest, and most adventurous flavor to date.