Regular Size - handles two size 14 tungsten bead head nymphs or trim down when delicate presentations are necessary. X-Large Size - if you fish with lots of weight - this size was recently featured by the Gink and Gasoline Blog site! The tubing package comes with 3 feet of the ultimate material to make the special sleeves for the indicators. There are all kinds of materials out there for making indicators. This is the best we have found after years of research and development. This tubing works in warm or cold conditions and is specially manufactured to meet the demanding conditions fishermen find themselves on the water. It provides the perfect size and tension for the indicators to hug the fishing line and yet still move when you want it to. Carefully engineered, it will provide you with optimal size and adjustability.