Review on Birdi Disc Golf - Flat Circular LED Lights for Night Disc Golf - 8 Pack (Multi) by Eric Temple

BENEFITS - They hold up great the first time or two if gently removed, but may not be usable the third time - They're insanely bright and shine well on both sides of the disc. Unlike MVP . Being perfectly round, they don't affect the flight of the disc as much as the MVPs because the MVPs are glued on unevenly. They don't randomly turn off like 1 in 4 MVPs when you make sure the batteries are fully inserted - they absolutely stay on the drives for dozens of uses if left on the drive after the initial splice. AGAINST - they're insanely bright. Blinds your peripheral vision when retracted, similar to MVP. Depending on your grips (e.g. the fan handle) your finger may touch it a little. On 2nd or 3rd use, they may come off if you hit a tree (but not on 1st use on a blank premium disc). I wish they also sell thin rings with double sided tape if they lose their stickiness after the 2nd or 3rd use.