White + Warren Cinch Waist Crewneck in Black. - size S (also in XS) White + Warren Cinch Waist Crewneck in Black. - size S (also in XS) 50% poly 30% viscose 20% silk. Knit fabric. Adjustable ruched front. Imported. WWAR-WK199. 18402. A well-known name among luxe lovers and cashmere cravers, White + Warren is the NYC based label that has been defining cold weather wear for the last 17 years. White + Warren eloquently manipulates knitwear taking it from functional to fashionable. Everything from tees to joggers, wraps to ponchos make up their arsenal.