Stillwater Button Skirt in Black. - size S (also in ) Stillwater Button Skirt in Black. - size S (also in ) 100% viscose. Dry clean only. Unlined. Button front closures. Skirt measures approx 44 in length. STWA-WQ10. J7009. A California brand with its roots in the bohemian lifestyle, Stillwater, seeks to appeal to the cool girl in all of us. The lines director and fashion industry vet, Lisa Popp, injects elements of simplicity by utilizing a neutral palate in many of the brands designs to nod at a minimalist existence. Stillwater not only exercises mindfulness by way of design, but also through production through recycled materials and sustainable practices.