Stillwater The Shirt in Charcoal. - size S (also in ) Stillwater The Shirt in Charcoal. - size S (also in ) 72% lenzing modal 28% poly. Dry clean only. Button front closures. Front breast pockets. Button cuffed sleeves. STWA-WS101. CJ3008. 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.