The Promar Star Crab Trap is constructed of high grade wire and sealed with a protective coating, this proven pyramid-style crab trap is extremely durable and features a fully collapsible design and comes complete with draw-up cords although a 50 or 100 foot trap line is required for retrieval. Simply attach bait to the center of the base, wait for hungry crab to feast, and pull up on your retrieval line to lift the sides of the trap. Simple. 1" X 2" mesh sides. 1" square mesh bottom.