Fish mortality can be reduced by landing the fish quickly and by avoiding netting and handling. This technique will preserve protective coatings and eliminate air exposure. The Ketchum Release tool makes this low-mortality release easy. The tool also allows you to retrieve your fly without damage and it allows your hands to stay dry in cold weather. Three sizes are available: the Midge is designed for flies on hook sizes 20 and smaller; the Original is designed for medium-sized flies; the Big Bug is designed for large-bodied flies like Hoppers. Unconditional lifetime guarantee.