This item is suited for day or night use and can increase your water visibility for up to 200'. Its new light diffusion pattern also gives it a natural glow that does not turn off gamefish and, instead, lures them in. The Night Bobby lighted floats are made of high-impact polycarbonate. The shock-resistant light emitting diode will never need replacement. Using this night fishing float is also easy, since the float can be removed without cutting the line and removing the bait, hook or sinker. It also allows the line to slip in freely and locks it securely.