Our Lightweight fabric made from bamboo is what put us on the map. Tired of heavy, sticky, overbuilt "performance" clothing, we hunted down the perfect lightweight fabric-crafted from bamboo-and built a lineup of insanely soft and simple shirts. The Bamboo Lightweight Long Sleeve II is the second generation of this women's style, now with an updated and super dialed fit. Buttery soft, super breathable, and equipped with a UPF 20 rating, it's the perfect layer for all your sun-soaked adventures when shade is hard to come by.