The Women's Siren Short-Sleeve Quarter-Zip has all the features of our original Barrier line, with a few new tricks up its water-resistant sleeves. Featuring seamless underarms, a longer length, four-way stretch, water-repellent fabric, flat-lock seams, a woman-specific fit, and 50+ UPF protection. This updated Siren line also features contrast-color side gussets and a new front zip to allow heat release and easier removal.