Unibobbers are made of flexible material and will float forever. You can tie the unibobber on your fly or use at as a micro size indicator in the leader.
Unibobbers will help your flies to float, but will also help you to see flies. The "Glow in the Dark" color will be visible even in the dark (needs to be charged with flash light or other light source).
Diameter about 7 mm. Package contains 6 pcs, color combination contains 13 pcs.