Assembly Label, Wool Cashmere Rib Long Sleeve Top in Dark Olive. The Wool Cashmere Rib Long Sleeve Top is a layering essential. Knitted from premium wool and cashmere yarns, this soft ribbed knit has a relaxed stretchy fit, crew neckline and dropped shoulders. This is the perfect knit top to wear everyday, and can be styled as a set with our coordinating Wool Cashmere Rib Skirt.