MONROW Star Vintage Sweatpant in Black. - size XS (also in ) MONROW Star Vintage Sweatpant in Black. - size XS (also in ) 50% poly 25% cotton 25% rayon. Drawstring waist. Graphic print throughout. Elasticized leg openings. HARL-WP408. HB006 36. Launched in 2007 as a basics label, Monrow has quickly risen to the top. Designers Michelle Wenke and Megan George have created a line of fundamentals-quintessential wardrobe staples with attention to fit, fabric, technique and innovative prints.