MONROW Rib Tank in Green. - size L (also in ) MONROW Rib Tank in Green. - size L (also in ) 100% rayon. Rib knit fabric. HARL-WS708. HT0264 3. 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.