Everyday Versatility, Trail-Ready Performance The Eclipse Sun Tank delivers lightweight performance and breathable comfort for sunny hikes, trail runs, and warm-weather adventures. Made from quick-drying, bluesign approved fabric, it offers UPF 50+ sun protection and ActiveFresh odor control for lasting freshness on long days outside. The stretch construction and split side hem move naturally, while chafe-free seams, a bonded neckline, and relaxed fit keep you cool and comfortable from first mile to last.