Rob's Reel Baits is a Florida local who has been making bait pens and bait traps for years. The chum cage is a coated metal cage with an opening at the top and put together with stainless hog rings to last in the saltwater. It comes in a 1/2" X 1/2" mesh (pictured) or 1" X 1/2" mesh. The 1/2" X 1/2" mesh will let the chum out slower to help with double ground chum and disperse chum slower, while the 1" X 1/2" mesh is larger and will release chum faster and work better with thicker or chunkier chum. Dimensions are 12" long X 7" wide X 4" tall