Reusable Shopping Cart Bags by MiSunMart, Set of 4 Tandem, Detachable Bags Set of 4 attachable/detachable, reusable shopping cart (trolley) bags Tandem design with sturdy support rods that fit across standard shopping carts 4 bright and distinct colors. Hook & loop tabbed closures to keep contents secure during transport Durable fabric with flexible nylon mesh bottoms