Trout Gum Deer Leather Natural 90cm x 2, White Deer Leather 95cm x 1, Black Deer Leather 60cm x 1, Width 2.5mm-3mm, Gold Bead Heads x 40 and Yellow/Orange x 20, Brand New, Unused. In actual fishing, this Trout Gum is made of deer leather skin, and when wet, it becomes soft and slippery, and I feel that the trout take longer to spit it out, which is why it catches fish. These are sample photos of it tied to a fly, and it can be easily finished in yellow, pink, and orange. You can easily make yellow and various colored Trout Gum flies by placing the white skin on a white paper mount and coloring it with water-based poster color markers.