Marc Jacobs The Sack Bag is a slouchy shoulder bag with a distinctive crochet-knit texture and subtle gold-tone threading, ideal for everyday wear. It pairs a relaxed silhouette with practical details like a removable zip pouch and self-tie closure. Key attributes: Black | Polyester | Removable zip pouch | Self-tie closure | Leather trim | Slouchy silhouette | Crochet knit texture | Gold-tone threading | Composition & care: 91% polyester, 9% polyamide