Derek Lam 10 Crosby's Slim Long Sleeve Crew Sweater is cozy in soft marled grey knit, while the slim cut makes it an easy workweek to weekend option | Crew neckline | Long sleeves | Rib knit trim finishes neckline, cuffs, and hem | Slim cut silhouette. Merino Wool / Mohair / Cashmere / Polyamide dry clean